diff --git a/files/ansible-playbooks/ptsd_reacquire_attempt-old.yml b/files/ansible-playbooks/ptsd_reacquire_attempt-old.yml
new file mode 100644
index 0000000..dacf7ea
--- /dev/null
+++ b/files/ansible-playbooks/ptsd_reacquire_attempt-old.yml
@@ -0,0 +1,759 @@
+# ptsd_reacquire_attempt.yml
+# PTSD DHCP Reacquire Attempt | Phase 0 | Connectivity + wrapper + DHCP state check + case A cleanup
+
+- name: "PTSD DHCP Reacquire Attempt | Phase 0 | Connectivity + wrapper + DHCP state check"
+  hosts: all
+  gather_facts: no
+
+  vars:
+    pathprefix: "PATH=/sbin:/usr/sbin:/bin:/usr/bin:$PATH; "
+
+    dev1_user: "root"
+    dev1_pass: "wavewave"
+
+    dev2_host: "192.168.1.1"
+    dev2_port: 22
+
+    dev2_side_ip: "192.168.1.11/24"
+    dev2_side_ip_addr: "{{ dev2_side_ip.split('/')[0] }}"
+    dev1_iface: "br-wan"
+
+    arping_iface: "eth0"
+
+    dev2_ssh_user: "root"
+    dev2_passfiles:
+      - "basicpass"
+      - "basicpass2"
+
+    ssh_opts_common: >-
+      -o PreferredAuthentications=password
+      -o PubkeyAuthentication=no
+      -o StrictHostKeyChecking=no
+      -o UserKnownHostsFile=/dev/null
+      -o NumberOfPasswordPrompts=1
+      -o ConnectTimeout=30
+      -o ConnectionAttempts=1
+      -o LogLevel=ERROR
+
+    debugging: true
+    ssh_timeout: 30
+
+  pre_tasks:
+    - name: Initialize passfile facts defensively (avoid undefined vars later)
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dev2_passfile_used_direct: "NONE"
+        dev2_passfile_used_tunnel: "NONE"
+        dev2_passfile_used_lldp4: "NONE"
+        dev2_passfile_used_lldp6: "NONE"
+      changed_when: false
+
+    - name: Read DEV1 hostname (busybox-safe)
+      ansible.builtin.raw: >
+        {{ pathprefix }}
+        (cat /proc/sys/kernel/hostname 2>/dev/null || echo "")
+      register: dev1_host_read
+      changed_when: false
+
+    - name: Stop early if connected DEV1 hostname != inventory (guard)
+      ansible.builtin.meta: end_host
+      when: (dev1_host_read.stdout | trim | length > 0) and
+            ((dev1_host_read.stdout | trim) != (inventory_hostname | string))
+
+  tasks:
+    - name: Compute hostname digits key for LLDP lookup (DEV2)
+      ansible.builtin.set_fact:
+        dev2_lldp_digits: "{{ (inventory_hostname | string) | regex_replace('[^0-9]', '') }}"
+      changed_when: false
+
+ #   - name: Restart LLDP on DEV1 to refresh DEV2 management data
+ #     ansible.builtin.raw: >
+ #       {{ pathprefix }}
+ #       mv /tmp/launchd/services/lldp-server /root/lldp-server;
+ #       sleep 2;
+ #       mv /root/lldp-server /tmp/launchd/services/lldp-server;
+ #       sleep 10
+ #     ignore_errors: true
+
+
+    - name: Discover DEV2 candidate IPv4 via LLDP on DEV1 (best-effort)
+      ansible.builtin.raw: >
+        {{ pathprefix }}
+        DIGITS="{{ dev2_lldp_digits }}";
+        cat /var/run/lldp_server.json 2>/dev/null \
+          | grep "${DIGITS}" -A 10 \
+          | grep address \
+          | grep -vE 'subtype|ipv6' \
+          | awk -F'"' '{ print $4 }' \
+          | head -n1
+      register: dev2_lldp_ip_raw
+      changed_when: false
+      failed_when: false
+
+    - name: Discover DEV2 candidate IPv6 via LLDP on DEV1 (best-effort)
+      ansible.builtin.raw: >
+        {{ pathprefix }}
+        DIGITS="{{ dev2_lldp_digits }}";
+        cat /var/run/lldp_server.json 2>/dev/null \
+          | grep "${DIGITS}" -A 15 \
+          | grep 'address_ipv6' \
+          | awk -F'"' '{ print $4 }' \
+          | head -n1
+      register: dev2_lldp_ip6_raw
+      changed_when: false
+      failed_when: false
+
+    - name: Capture LLDP-derived DEV2 IP facts
+      ansible.builtin.set_fact:
+        lldp_dev2_ip: "{{ (dev2_lldp_ip_raw.stdout | default('')) | trim }}"
+        lldp_dev2_ip6: "{{ (dev2_lldp_ip6_raw.stdout | default('')) | trim }}"
+      changed_when: false
+
+    - name: Classify LLDP IPv4 candidate
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        lldp_ip_class: >-
+          {% set ip = (lldp_dev2_ip | default('')) %}
+          {% if ip == '' %}none
+          {% elif ip.startswith('10.') %}10
+          {% elif ip.startswith('192.168.') %}192_168
+          {% else %}other{% endif %}
+      changed_when: false
+
+    - name: Debug LLDP candidates
+      when: debugging | bool
+      delegate_to: localhost
+      ansible.builtin.debug:
+        msg:
+          - "LLDP digits={{ dev2_lldp_digits | default('') }}"
+          - "LLDP IPv4 candidate={{ lldp_dev2_ip | default('<none>') }}"
+          - "LLDP IPv4 class={{ lldp_ip_class | default('none') }}"
+          - "LLDP IPv6 candidate={{ lldp_dev2_ip6 | default('<none>') }}"
+
+    - name: Override dev2_host from LLDP when candidate is 192.168.x.x
+      when: (lldp_ip_class | trim) == "192_168" and (lldp_dev2_ip | trim | length > 0)
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dev2_host: "{{ lldp_dev2_ip | trim }}"
+      changed_when: false
+
+    - name: Set connection method initial (direct_lldp if 10.x else tunnel)
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dev2_conn_method: "{{ 'direct_lldp' if ((lldp_ip_class | trim) == '10') else 'tunnel' }}"
+      changed_when: false
+
+    - name: Try DEV2 login via direct LLDP IPv4 (10.x) with basicpass
+      when: dev2_conn_method == "direct_lldp"
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        HOST="{{ lldp_dev2_ip }}"
+        sshpass -f basicpass ssh {{ ssh_opts_common }} \
+          -o AddressFamily=inet \
+          "{{ dev2_ssh_user }}@${HOST}" echo OK >/dev/null 2>&1
+      args: { executable: /bin/bash }
+      register: dev2_lldp_try_basicpass
+      changed_when: false
+      ignore_errors: true
+
+    - name: Select basicpass for direct LLDP if succeeded
+      when: dev2_conn_method == "direct_lldp" and dev2_lldp_try_basicpass.rc == 0
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dev2_passfile_used_direct: "basicpass"
+      changed_when: false
+
+    - name: Try DEV2 login via direct LLDP IPv4 (10.x) with basicpass2 (only if first failed)
+      when: dev2_conn_method == "direct_lldp" and (dev2_passfile_used_direct == "NONE")
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        HOST="{{ lldp_dev2_ip }}"
+        sshpass -f basicpass2 ssh {{ ssh_opts_common }} \
+          -o AddressFamily=inet \
+          "{{ dev2_ssh_user }}@${HOST}" echo OK >/dev/null 2>&1
+      args: { executable: /bin/bash }
+      register: dev2_lldp_try_basicpass2
+      changed_when: false
+      ignore_errors: true
+
+    - name: Select basicpass2 for direct LLDP if succeeded
+      when: dev2_conn_method == "direct_lldp" and dev2_passfile_used_direct == "NONE" and dev2_lldp_try_basicpass2.rc == 0
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dev2_passfile_used_direct: "basicpass2"
+      changed_when: false
+
+    - name: Add temporary IP on DEV1 (tolerate 'File exists')
+      when: dev2_conn_method == "tunnel"
+      ansible.builtin.raw: >
+        {{ pathprefix }}
+        ip a add {{ dev2_side_ip }} dev {{ dev1_iface }}
+      register: add_ip
+      changed_when: add_ip.rc == 0
+      failed_when: >
+        add_ip.rc != 0
+        and ('File exists' not in (add_ip.stdout | default('')))
+        and ('File exists' not in (add_ip.stderr | default('')))
+
+    - name: Discover DEV2 MAC via bridge fdb on DEV1 (best-effort)
+      when: dev2_conn_method == "tunnel"
+      ansible.builtin.raw: >
+        {{ pathprefix }}
+        bridge fdb show {{ dev1_iface }} | grep eth0 | grep -v permanent | grep master | awk '{print $1}' | head -n1
+      register: dev2_mac_scan
+      changed_when: false
+      failed_when: false
+
+    - name: Capture discovered DEV2 MAC (if any)
+      when: dev2_conn_method == "tunnel"
+      ansible.builtin.set_fact:
+        dev2_mac: "{{ (dev2_mac_scan.stdout | default('') ) | trim }}"
+      changed_when: false
+
+    - name: Clear existing ARP entry for DEV2 on DEV1 (best-effort)
+      when: dev2_conn_method == "tunnel"
+      ansible.builtin.raw: >
+        {{ pathprefix }}
+        ip neigh del {{ dev2_host }} dev {{ dev1_iface }} 2>/dev/null || true
+      changed_when: false
+      failed_when: false
+
+    - name: Add static ARP entry on DEV1 (if MAC discovered; tolerate 'File exists')
+      when: dev2_conn_method == "tunnel" and (dev2_mac | default('') | length > 0)
+      ansible.builtin.raw: >
+        {{ pathprefix }}
+        ip neigh add {{ dev2_host }} lladdr {{ dev2_mac }} dev {{ dev1_iface }} nud permanent
+      register: dev2_arp_add
+      changed_when: dev2_arp_add.rc == 0
+      failed_when: >
+        dev2_arp_add.rc != 0
+        and ('File exists' not in (dev2_arp_add.stdout | default('')))
+        and ('File exists' not in (dev2_arp_add.stderr | default('')))
+
+    - name: Refresh ARP (best-effort)
+      when: dev2_conn_method == "tunnel"
+      ansible.builtin.raw: >
+        {{ pathprefix }}
+        arping -U -I {{ arping_iface }} {{ dev2_side_ip_addr }} -c 3
+      changed_when: false
+      failed_when: false
+
+    - name: Pick a free local TCP port for the tunnel (controller side)
+      when: dev2_conn_method == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        pick() {
+          for i in $(seq 1 25); do
+            p="$(shuf -i 20000-39999 -n 1)"
+            if command -v ss >/dev/null 2>&1; then
+              if ! ss -ltn | awk '{print $4}' | grep -qE "(:|\.)${p}$"; then
+                echo "$p"; return 0
+              fi
+            else
+              if ! nc -z 127.0.0.1 "$p" >/dev/null 2>&1; then
+                echo "$p"; return 0
+              fi
+            fi
+          done
+          return 1
+        }
+        pick
+      args: { executable: /bin/bash }
+      register: pick_port
+      changed_when: false
+
+    - name: Stop if no free local port was found
+      when: dev2_conn_method == "tunnel" and (pick_port.stdout | trim | length) == 0
+      ansible.builtin.meta: end_host
+
+    - name: Create control dir for SSH ControlMaster
+      when: dev2_conn_method == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.shell: "mktemp -d"
+      args: { executable: /bin/bash }
+      register: mktemp_dir
+      changed_when: false
+
+    - name: Record chosen local port and build ControlMaster socket path
+      when: dev2_conn_method == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        _local_port: "{{ pick_port.stdout | trim }}"
+        _ctrl_dir: "{{ mktemp_dir.stdout | trim }}"
+        _ctrl_sock: "{{ (mktemp_dir.stdout | trim) }}/ssh_tunnel_ctl"
+      changed_when: false
+
+    - name: Start SSH ControlMaster and forward 127.0.0.1:local_port to DEV2 22 via DEV1
+      when: dev2_conn_method == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        USER="{{ dev1_user }}"
+        HOST="{{ ansible_host | default(inventory_hostname) }}"
+        sshpass -p '{{ dev1_pass }}' ssh -f -N {{ ssh_opts_common }} \
+          -M -S "{{ _ctrl_sock }}" \
+          -L "127.0.0.1:{{ _local_port }}:{{ dev2_host }}:{{ dev2_port }}" \
+          "${USER}@${HOST}"
+      args: { executable: /bin/bash }
+      register: start_tunnel
+      changed_when: true
+
+    - name: Probe TCP reachability to DEV2 through the tunnel (nc)
+      when: dev2_conn_method == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        nc -z -w5 127.0.0.1 "{{ _local_port }}"
+      args: { executable: /bin/bash }
+      register: nc_probe
+      changed_when: false
+      ignore_errors: true
+
+    - name: Stop if tunnel TCP probe failed
+      when: dev2_conn_method == "tunnel" and nc_probe.rc != 0
+      ansible.builtin.meta: end_host
+
+    - name: Pick DEV2 password for root (tunnel) try basicpass
+      when: dev2_conn_method == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        PORT="{{ _local_port }}"
+        sshpass -f basicpass ssh {{ ssh_opts_common }} \
+          -o AddressFamily=inet \
+          -p "$PORT" root@127.0.0.1 echo OK >/dev/null 2>&1
+      args: { executable: /bin/bash }
+      register: dev2_try_basicpass
+      changed_when: false
+      ignore_errors: true
+
+    - name: Select basicpass if tunnel login succeeded
+      when: dev2_conn_method == "tunnel" and dev2_try_basicpass.rc == 0
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dev2_passfile_used_tunnel: "basicpass"
+      changed_when: false
+
+    - name: Try DEV2 login through tunnel with basicpass2 (only if first failed)
+      when: dev2_conn_method == "tunnel" and (dev2_passfile_used_tunnel == "NONE")
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        PORT="{{ _local_port }}"
+        sshpass -f basicpass2 ssh {{ ssh_opts_common }} \
+          -o AddressFamily=inet \
+          -p "$PORT" root@127.0.0.1 echo OK >/dev/null 2>&1
+      args: { executable: /bin/bash }
+      register: dev2_try_basicpass2
+      changed_when: false
+      ignore_errors: true
+
+    - name: Select basicpass2 if tunnel login succeeded
+      when: dev2_conn_method == "tunnel" and dev2_passfile_used_tunnel == "NONE" and dev2_try_basicpass2.rc == 0
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dev2_passfile_used_tunnel: "basicpass2"
+      changed_when: false
+
+    - name: Decide final DEV2 connection mode (direct_lldp > tunnel > lldp4 > lldp6)
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dev2_conn_final: >-
+          {%- if dev2_conn_method == 'direct_lldp' and (dev2_passfile_used_direct | default('NONE')) != 'NONE' -%}
+            direct_lldp
+          {%- elif dev2_conn_method == 'tunnel' and (dev2_passfile_used_tunnel | default('NONE')) != 'NONE' -%}
+            tunnel
+          {%- else -%}
+            none
+          {%- endif -%}
+      changed_when: false
+
+    - name: Abort if all DEV2 connection methods failed
+      when: dev2_conn_final == "none"
+      ansible.builtin.fail:
+        msg: >
+          DEV2 unreachable:
+          tunnel={{ dev2_passfile_used_tunnel | default('n/a') }},
+          direct={{ dev2_passfile_used_direct | default('n/a') }}.
+
+    - name: Debug final connectivity decision
+      when: debugging | bool
+      delegate_to: localhost
+      ansible.builtin.debug:
+        msg:
+          - "dev2_conn_final={{ dev2_conn_final }}"
+          - "tunnel passfile={{ dev2_passfile_used_tunnel | default('n/a') }}"
+          - "direct passfile={{ dev2_passfile_used_direct | default('n/a') }}"
+          - "tunnel target={{ dev2_host }}:{{ dev2_port }} forwarded 127.0.0.1:{{ _local_port | default('na') }}"
+          - "lldp ipv4={{ lldp_dev2_ip | default('') }}"
+          - "lldp ipv6={{ lldp_dev2_ip6 | default('') }}"
+
+    - name: Build DEV2 exec wrapper (controller-side) for verification commands
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dev2_exec_cmd: |
+          set -e
+          MODE="{{ dev2_conn_final }}"
+          if [ -z "${DEV2_CMD:-}" ]; then
+            echo "ERROR DEV2_CMD empty" >&2
+            exit 2
+          fi
+
+          case "$MODE" in
+            tunnel)
+              PORT="{{ _local_port | default('') }}"
+              PASS="{{ dev2_passfile_used_tunnel }}"
+              sshpass -f "$PASS" ssh {{ ssh_opts_common }} \
+                -o AddressFamily=inet \
+                -p "$PORT" "{{ dev2_ssh_user }}@127.0.0.1" \
+                "{{ pathprefix }} ${DEV2_CMD}" 2>&1
+              ;;
+            direct_lldp)
+              HOST="{{ lldp_dev2_ip }}"
+              PASS="{{ dev2_passfile_used_direct }}"
+              sshpass -f "$PASS" ssh {{ ssh_opts_common }} \
+                -o AddressFamily=inet \
+                "{{ dev2_ssh_user }}@${HOST}" \
+                "{{ pathprefix }} ${DEV2_CMD}" 2>&1
+              ;;
+            *)
+              echo "ERROR unknown MODE=$MODE" >&2
+              exit 3
+              ;;
+          esac
+      changed_when: false
+
+    - name: VERIFY DEV2 check ppp0 exists?
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        export DEV2_CMD="ip link show ppp0 >/dev/null 2>&1 && echo YES || echo NO"
+        {{ dev2_exec_cmd }}
+      args: { executable: /bin/bash }
+      register: dev2_ppp0_exists
+      changed_when: false
+      failed_when: false
+
+    - name: VERIFY Debug ppp0 probe result
+      when: debugging | bool
+      delegate_to: localhost
+      ansible.builtin.debug:
+        msg:
+          - 'DEV2 probe ppp0 exists raw={{ (dev2_ppp0_exists.stdout | default("") ) | trim }}'
+          - "DEV2 probe ppp0 exists rc={{ dev2_ppp0_exists.rc | default('n/a') }}"
+
+    - name: VERIFY DEV2 check eth0.4000 exists?
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        export DEV2_CMD="ip link show eth0.4000 >/dev/null 2>&1 && echo YES || echo NO"
+        {{ dev2_exec_cmd }}
+      args: { executable: /bin/bash }
+      register: dev2_eth04000_exists
+      changed_when: false
+      failed_when: false
+
+    - name: VERIFY Debug eth0.4000 link probe result
+      when: debugging | bool
+      delegate_to: localhost
+      ansible.builtin.debug:
+        msg:
+          - 'DEV2 probe eth0.4000 exists raw={{ (dev2_eth04000_exists.stdout | default("") ) | trim }}'
+          - "DEV2 probe eth0.4000 exists rc={{ dev2_eth04000_exists.rc | default('n/a') }}"
+
+    - name: VERIFY DEV2 check eth0.4000 has IPv4?
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        export DEV2_CMD="ip -4 addr show dev eth0.4000 2>/dev/null | grep -m1 'inet ' >/dev/null 2>&1 && echo YES || echo NO"
+        {{ dev2_exec_cmd }}
+      args: { executable: /bin/bash }
+      register: dev2_eth04000_has_ipv4
+      changed_when: false
+      failed_when: false
+
+    - name: VERIFY Debug eth0.4000 IPv4 probe result
+      when: debugging | bool
+      delegate_to: localhost
+      ansible.builtin.debug:
+        msg:
+          - 'DEV2 probe eth0.4000 has IPv4 raw={{ (dev2_eth04000_has_ipv4.stdout | default("") ) | trim }}'
+          - "DEV2 probe eth0.4000 has IPv4 rc={{ dev2_eth04000_has_ipv4.rc | default('n/a') }}"
+
+    - name: VERIFY Summarize DHCP migration state
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        ppp0_exists: "{{ (dev2_ppp0_exists.stdout | default('') | trim) == 'YES' }}"
+        eth04000_exists: "{{ (dev2_eth04000_exists.stdout | default('') | trim) == 'YES' }}"
+        eth04000_has_ipv4: "{{ (dev2_eth04000_has_ipv4.stdout | default('') | trim) == 'YES' }}"
+        dhcp_migrated_ok: >-
+          {{
+            ((dev2_ppp0_exists.stdout | default('') | trim) != 'YES')
+            and
+            ((dev2_eth04000_exists.stdout | default('') | trim) == 'YES')
+            and
+            ((dev2_eth04000_has_ipv4.stdout | default('') | trim) == 'YES')
+          }}
+      changed_when: false
+
+    - name: VERIFY Classify migration state
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dhcp_state: >-
+          {% if (dhcp_migrated_ok | bool) %}
+          case_a_dhcp_ok
+          {% elif (ppp0_exists | bool) and (not (eth04000_exists | bool)) %}
+          case_b_pppoe_old
+          {% elif (ppp0_exists | bool) and (eth04000_exists | bool) %}
+          case_c_mixed
+          {% else %}
+          unknown
+          {% endif %}
+      changed_when: false
+
+    - name: VERIFY Report migration state summary
+      delegate_to: localhost
+      ansible.builtin.debug:
+        msg:
+          - "DEV2 connectivity via {{ dev2_conn_final }}"
+          - "DEV2 probes ppp0={{ ppp0_exists }} eth0.4000={{ eth04000_exists }} eth0.4000_ipv4={{ eth04000_has_ipv4 }}"
+          - "DEV2 classified state={{ dhcp_state }}"
+          - "DEV2 DHCP migrated ok={{ dhcp_migrated_ok }}"
+
+    - name: VERIFY Report why migration is not confirmed
+      when: not (dhcp_migrated_ok | bool)
+      delegate_to: localhost
+      ansible.builtin.debug:
+        msg:
+          - "DEV2 is not confirmed as DHCP-migrated"
+          - "DEV2 classified state={{ dhcp_state }}"
+          - "Expected for success case A: ppp0 absent, eth0.4000 present, eth0.4000 has IPv4"
+          - "Observed: ppp0={{ ppp0_exists }}, eth0.4000={{ eth04000_exists }}, eth0.4000_ipv4={{ eth04000_has_ipv4 }}"
+      changed_when: false
+
+    - name: VERIFY End host if DHCP migration state is not confirmed
+      when: not (dhcp_migrated_ok | bool)
+      ansible.builtin.meta: end_host
+
+    - name: CASE A DEV2 run config-test check before reboot cancellation
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        export DEV2_CMD="/usr/sbin/config-test.lua -c >/dev/null 2>&1 && echo OK || echo FAIL"
+        {{ dev2_exec_cmd }}
+      args: { executable: /bin/bash }
+      register: config_test_check
+      changed_when: false
+      failed_when: false
+
+    - name: CASE A set config-test check status
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        config_test_ok: "{{ (config_test_check.stdout | default('') | trim) == 'OK' }}"
+      changed_when: false
+
+    - name: CASE A append config-test check result
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        cleanup_report: >-
+          {{
+            (cleanup_report | default('case A observed'))
+            ~ ', '
+            ~ (
+              'config-test -c ok'
+              if (config_test_ok | bool)
+              else 'config-test -c failed'
+            )
+          }}
+      changed_when: false
+
+    - name: CASE A Initialize cumulative cleanup report
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        cleanup_report: "case A observed"
+      changed_when: false
+
+    - name: CASE A DEV2 find if pending reboot is present
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        export DEV2_CMD="ps w | grep eboot | grep -v grep >/dev/null 2>&1 && echo FOUND || echo NOT_FOUND"
+        {{ dev2_exec_cmd }}
+      args: { executable: /bin/bash }
+      register: reboot_present
+      changed_when: false
+      failed_when: false
+
+    - name: CASE A DEV2 cancel reboot if present
+      when: dhcp_migrated_ok | bool and (config_test_ok | bool) and (reboot_present.stdout | default('') | trim) == "FOUND"
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        export DEV2_CMD="ps w | grep eboot | grep -v grep >/dev/null 2>&1 && killall reboot 2>/dev/null || true; echo DONE"
+        {{ dev2_exec_cmd }}
+      args: { executable: /bin/bash }
+      register: reboot_cancel
+      changed_when: false
+      failed_when: false
+
+    - name: CASE A append reboot cancellation result
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        cleanup_report: >-
+          {{
+            cleanup_report
+            ~ ', '
+            ~ (
+              'pending reboot found and cancelled'
+              if (reboot_present.stdout | default('') | trim) == 'FOUND'
+              else 'no pending reboot'
+            )
+          }}
+      changed_when: false
+
+    - name: CASE A DEV2 touch confirming_success marker
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        export DEV2_CMD="touch /tmp/confirming_success >/dev/null 2>&1 && echo OK || echo FAIL"
+        {{ dev2_exec_cmd }}
+      args: { executable: /bin/bash }
+      register: confirming_success_touch
+      changed_when: false
+      failed_when: false
+
+    - name: CASE A append confirming_success marker result
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        cleanup_report: >-
+          {{
+            cleanup_report
+            ~ ', '
+            ~ (
+              'touched /tmp/confirming_success'
+              if (confirming_success_touch.stdout | default('') | trim) == 'OK'
+              else 'failed to touch /tmp/confirming_success'
+            )
+          }}
+      changed_when: false
+
+    - name: CASE A sleep 5 seconds
+      when: dhcp_migrated_ok | bool
+      ansible.builtin.pause:
+        seconds: 5
+
+    - name: CASE A DEV2 move config test to config with dhcp
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        export DEV2_CMD="mv /tmp/config-test.json /tmp/config-with-dhcp.json >/dev/null 2>&1 && echo OK || echo FAIL"
+        {{ dev2_exec_cmd }}
+      args: { executable: /bin/bash }
+      register: mv_config_result
+      changed_when: false
+      failed_when: false
+
+    - name: CASE A append config move result
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        cleanup_report: >-
+          {{
+            cleanup_report
+            ~ ', '
+            ~ (
+              'moved /tmp/config-test.json to /tmp/config-with-dhcp.json'
+              if (mv_config_result.stdout | default('') | trim) == 'OK'
+              else 'failed to move /tmp/config-test.json to /tmp/config-with-dhcp.json'
+            )
+          }}
+      changed_when: false
+
+    - name: CASE A DEV2 remove ptsd inprogress marker
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        export DEV2_CMD="rm -f /tmp/ptsd.inprogress >/dev/null 2>&1 && echo OK || echo FAIL"
+        {{ dev2_exec_cmd }}
+      args: { executable: /bin/bash }
+      register: rm_inprogress_result
+      changed_when: false
+      failed_when: false
+
+    - name: CASE A append ptsd inprogress removal result
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        cleanup_report: >-
+          {{
+            cleanup_report
+            ~ ', '
+            ~ (
+              'removed /tmp/ptsd.inprogress'
+              if (rm_inprogress_result.stdout | default('') | trim) == 'OK'
+              else 'failed to remove /tmp/ptsd.inprogress'
+            )
+          }}
+      changed_when: false
+
+    - name: CASE A final cumulative cleanup report
+      when: dhcp_migrated_ok | bool
+      delegate_to: localhost
+      ansible.builtin.debug:
+        msg:
+          - "{{ cleanup_report }}"
+      changed_when: false
+
+  post_tasks:
+    - name: Cleanup note
+      delegate_to: localhost
+      ansible.builtin.debug:
+        msg: "Cleanup best-effort, closing tunnel, removing temp IP, removing staged passfiles"
+      changed_when: false
+
+    - name: Close SSH ControlMaster (best-effort)
+      when: dev2_conn_method | default('') == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        ssh -S "{{ _ctrl_sock | default('/dev/null') }}" -O exit 2>/dev/null || true
+      args: { executable: /bin/bash }
+      changed_when: false
+      ignore_errors: true
+
+    - name: Remove tunnel control dir (best-effort)
+      when: dev2_conn_method | default('') == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.file:
+        path: "{{ _ctrl_dir | default('/tmp/none') }}"
+        state: absent
+      ignore_errors: true
+
+    - name: Remove staged passfiles from DEV1 (best-effort)
+      when: dev2_conn_method | default('') == "tunnel"
+      ansible.builtin.raw: >
+        {{ pathprefix }}
+        rm -f /tmp/basicpass /tmp/basicpass2 2>/dev/null || true
+      changed_when: false
+      failed_when: false
+
+    - name: Remove temporary IP on DEV1 (tolerate 'Cannot assign requested address')
+      when: dev2_conn_method | default('') == "tunnel"
+      ansible.builtin.raw: >
+        {{ pathprefix }}
+        ip a del {{ dev2_side_ip }} dev {{ dev1_iface }}
+      register: del_ip
+      changed_when: del_ip.rc == 0
+      failed_when: >
+        del_ip.rc != 0
+        and ('Cannot assign requested address' not in (del_ip.stdout | default('')))
+        and ('Cannot assign requested address' not in (del_ip.stderr | default('')))
diff --git a/files/ansible-playbooks/ptsd_reacquire_attempt.yml b/files/ansible-playbooks/ptsd_reacquire_attempt.yml
index dacf7ea..93ffe2f 100644
--- a/files/ansible-playbooks/ptsd_reacquire_attempt.yml
+++ b/files/ansible-playbooks/ptsd_reacquire_attempt.yml
@@ -44,6 +44,7 @@
       ansible.builtin.set_fact:
         dev2_passfile_used_direct: "NONE"
         dev2_passfile_used_tunnel: "NONE"
+        dev2_passfile_used_tunnel6: "NONE"
         dev2_passfile_used_lldp4: "NONE"
         dev2_passfile_used_lldp6: "NONE"
       changed_when: false
@@ -75,7 +76,6 @@
  #       sleep 10
  #     ignore_errors: true
 
-
     - name: Discover DEV2 candidate IPv4 via LLDP on DEV1 (best-effort)
       ansible.builtin.raw: >
         {{ pathprefix }}
@@ -312,12 +312,19 @@
       changed_when: false
       ignore_errors: true
 
-    - name: Stop if tunnel TCP probe failed
-      when: dev2_conn_method == "tunnel" and nc_probe.rc != 0
+    - name: Record IPv4 tunnel probe status
+      when: dev2_conn_method == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        tunnel_v4_ok: "{{ (nc_probe.rc | default(1)) == 0 }}"
+      changed_when: false
+
+    - name: Stop if tunnel TCP probe failed and no IPv6 candidate exists
+      when: dev2_conn_method == "tunnel" and not (tunnel_v4_ok | bool) and (lldp_dev2_ip6 | default('') | trim | length) == 0
       ansible.builtin.meta: end_host
 
     - name: Pick DEV2 password for root (tunnel) try basicpass
-      when: dev2_conn_method == "tunnel"
+      when: dev2_conn_method == "tunnel" and (tunnel_v4_ok | bool)
       delegate_to: localhost
       ansible.builtin.shell: |
         set -e
@@ -331,14 +338,14 @@
       ignore_errors: true
 
     - name: Select basicpass if tunnel login succeeded
-      when: dev2_conn_method == "tunnel" and dev2_try_basicpass.rc == 0
+      when: dev2_conn_method == "tunnel" and (tunnel_v4_ok | bool) and dev2_try_basicpass.rc == 0
       delegate_to: localhost
       ansible.builtin.set_fact:
         dev2_passfile_used_tunnel: "basicpass"
       changed_when: false
 
     - name: Try DEV2 login through tunnel with basicpass2 (only if first failed)
-      when: dev2_conn_method == "tunnel" and (dev2_passfile_used_tunnel == "NONE")
+      when: dev2_conn_method == "tunnel" and (tunnel_v4_ok | bool) and (dev2_passfile_used_tunnel == "NONE")
       delegate_to: localhost
       ansible.builtin.shell: |
         set -e
@@ -352,13 +359,149 @@
       ignore_errors: true
 
     - name: Select basicpass2 if tunnel login succeeded
-      when: dev2_conn_method == "tunnel" and dev2_passfile_used_tunnel == "NONE" and dev2_try_basicpass2.rc == 0
+      when: dev2_conn_method == "tunnel" and (tunnel_v4_ok | bool) and dev2_passfile_used_tunnel == "NONE" and dev2_try_basicpass2.rc == 0
       delegate_to: localhost
       ansible.builtin.set_fact:
         dev2_passfile_used_tunnel: "basicpass2"
       changed_when: false
 
-    - name: Decide final DEV2 connection mode (direct_lldp > tunnel > lldp4 > lldp6)
+    - name: Record need for IPv6 tunnel attempt
+      when: dev2_conn_method == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        need_tunnel6: >-
+          {{
+            (
+              (not (tunnel_v4_ok | default(false) | bool))
+              or
+              ((dev2_passfile_used_tunnel | default('NONE')) == 'NONE')
+            )
+            and
+            ((lldp_dev2_ip6 | default('') | trim | length) > 0)
+          }}
+      changed_when: false
+
+    - name: Pick a free local TCP port for the IPv6 tunnel (controller side)
+      when: dev2_conn_method == "tunnel" and (need_tunnel6 | bool)
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        pick() {
+          for i in $(seq 1 25); do
+            p="$(shuf -i 20000-39999 -n 1)"
+            if command -v ss >/dev/null 2>&1; then
+              if ! ss -ltn | awk '{print $4}' | grep -qE "(:|\.)${p}$"; then
+                echo "$p"; return 0
+              fi
+            else
+              if ! nc -z 127.0.0.1 "$p" >/dev/null 2>&1; then
+                echo "$p"; return 0
+              fi
+            fi
+          done
+          return 1
+        }
+        pick
+      args: { executable: /bin/bash }
+      register: pick_port6
+      changed_when: false
+
+    - name: Stop if no free local port was found for IPv6 tunnel
+      when: dev2_conn_method == "tunnel" and (need_tunnel6 | bool) and (pick_port6.stdout | trim | length) == 0
+      ansible.builtin.meta: end_host
+
+    - name: Create control dir for SSH ControlMaster (IPv6 tunnel)
+      when: dev2_conn_method == "tunnel" and (need_tunnel6 | bool)
+      delegate_to: localhost
+      ansible.builtin.shell: "mktemp -d"
+      args: { executable: /bin/bash }
+      register: mktemp_dir6
+      changed_when: false
+
+    - name: Record chosen local port and build ControlMaster socket path (IPv6 tunnel)
+      when: dev2_conn_method == "tunnel" and (need_tunnel6 | bool)
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        _local_port6: "{{ pick_port6.stdout | trim }}"
+        _ctrl_dir6: "{{ mktemp_dir6.stdout | trim }}"
+        _ctrl_sock6: "{{ (mktemp_dir6.stdout | trim) }}/ssh_tunnel_ctl6"
+      changed_when: false
+
+    - name: Start SSH ControlMaster and forward 127.0.0.1:local_port6 to DEV2 22 via DEV1 (IPv6)
+      when: dev2_conn_method == "tunnel" and (need_tunnel6 | bool)
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        USER="{{ dev1_user }}"
+        HOST="{{ ansible_host | default(inventory_hostname) }}"
+        IP6="{{ lldp_dev2_ip6 | trim }}"
+        sshpass -p '{{ dev1_pass }}' ssh -f -N {{ ssh_opts_common }} \
+          -M -S "{{ _ctrl_sock6 }}" \
+          -L "127.0.0.1:{{ _local_port6 }}:[${IP6}%{{ dev1_iface }}]:{{ dev2_port }}" \
+          "${USER}@${HOST}"
+      args: { executable: /bin/bash }
+      register: start_tunnel6
+      changed_when: true
+      ignore_errors: true
+
+    - name: Probe TCP reachability to DEV2 through the IPv6 tunnel (nc)
+      when: dev2_conn_method == "tunnel" and (need_tunnel6 | bool)
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        nc -z -w5 127.0.0.1 "{{ _local_port6 }}"
+      args: { executable: /bin/bash }
+      register: nc_probe6
+      changed_when: false
+      ignore_errors: true
+
+    - name: Stop if IPv6 tunnel TCP probe failed
+      when: dev2_conn_method == "tunnel" and (need_tunnel6 | bool) and (nc_probe6.rc | default(1)) != 0
+      ansible.builtin.meta: end_host
+
+    - name: Pick DEV2 password for root (IPv6 tunnel) try basicpass
+      when: dev2_conn_method == "tunnel" and (need_tunnel6 | bool)
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        PORT="{{ _local_port6 }}"
+        sshpass -f basicpass ssh {{ ssh_opts_common }} \
+          -o AddressFamily=inet \
+          -p "$PORT" root@127.0.0.1 echo OK >/dev/null 2>&1
+      args: { executable: /bin/bash }
+      register: dev2_try_basicpass6
+      changed_when: false
+      ignore_errors: true
+
+    - name: Select basicpass if IPv6 tunnel login succeeded
+      when: dev2_conn_method == "tunnel" and (need_tunnel6 | bool) and dev2_try_basicpass6.rc == 0
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dev2_passfile_used_tunnel6: "basicpass"
+      changed_when: false
+
+    - name: Try DEV2 login through IPv6 tunnel with basicpass2 (only if first failed)
+      when: dev2_conn_method == "tunnel" and (need_tunnel6 | bool) and (dev2_passfile_used_tunnel6 == "NONE")
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        set -e
+        PORT="{{ _local_port6 }}"
+        sshpass -f basicpass2 ssh {{ ssh_opts_common }} \
+          -o AddressFamily=inet \
+          -p "$PORT" root@127.0.0.1 echo OK >/dev/null 2>&1
+      args: { executable: /bin/bash }
+      register: dev2_try_basicpass26
+      changed_when: false
+      ignore_errors: true
+
+    - name: Select basicpass2 if IPv6 tunnel login succeeded
+      when: dev2_conn_method == "tunnel" and (need_tunnel6 | bool) and dev2_passfile_used_tunnel6 == "NONE" and dev2_try_basicpass26.rc == 0
+      delegate_to: localhost
+      ansible.builtin.set_fact:
+        dev2_passfile_used_tunnel6: "basicpass2"
+      changed_when: false
+
+    - name: Decide final DEV2 connection mode (direct_lldp > tunnel > tunnel6 > lldp4 > lldp6)
       delegate_to: localhost
       ansible.builtin.set_fact:
         dev2_conn_final: >-
@@ -366,6 +509,8 @@
             direct_lldp
           {%- elif dev2_conn_method == 'tunnel' and (dev2_passfile_used_tunnel | default('NONE')) != 'NONE' -%}
             tunnel
+          {%- elif dev2_conn_method == 'tunnel' and (dev2_passfile_used_tunnel6 | default('NONE')) != 'NONE' -%}
+            tunnel6
           {%- else -%}
             none
           {%- endif -%}
@@ -377,6 +522,7 @@
         msg: >
           DEV2 unreachable:
           tunnel={{ dev2_passfile_used_tunnel | default('n/a') }},
+          tunnel6={{ dev2_passfile_used_tunnel6 | default('n/a') }},
           direct={{ dev2_passfile_used_direct | default('n/a') }}.
 
     - name: Debug final connectivity decision
@@ -386,8 +532,10 @@
         msg:
           - "dev2_conn_final={{ dev2_conn_final }}"
           - "tunnel passfile={{ dev2_passfile_used_tunnel | default('n/a') }}"
+          - "tunnel6 passfile={{ dev2_passfile_used_tunnel6 | default('n/a') }}"
           - "direct passfile={{ dev2_passfile_used_direct | default('n/a') }}"
           - "tunnel target={{ dev2_host }}:{{ dev2_port }} forwarded 127.0.0.1:{{ _local_port | default('na') }}"
+          - "tunnel6 target={{ lldp_dev2_ip6 | default('') }}%{{ dev1_iface }}:{{ dev2_port }} forwarded 127.0.0.1:{{ _local_port6 | default('na') }}"
           - "lldp ipv4={{ lldp_dev2_ip | default('') }}"
           - "lldp ipv6={{ lldp_dev2_ip6 | default('') }}"
 
@@ -411,6 +559,14 @@
                 -p "$PORT" "{{ dev2_ssh_user }}@127.0.0.1" \
                 "{{ pathprefix }} ${DEV2_CMD}" 2>&1
               ;;
+            tunnel6)
+              PORT="{{ _local_port6 | default('') }}"
+              PASS="{{ dev2_passfile_used_tunnel6 }}"
+              sshpass -f "$PASS" ssh {{ ssh_opts_common }} \
+                -o AddressFamily=inet \
+                -p "$PORT" "{{ dev2_ssh_user }}@127.0.0.1" \
+                "{{ pathprefix }} ${DEV2_CMD}" 2>&1
+              ;;
             direct_lldp)
               HOST="{{ lldp_dev2_ip }}"
               PASS="{{ dev2_passfile_used_direct }}"
@@ -730,6 +886,15 @@
       changed_when: false
       ignore_errors: true
 
+    - name: Close SSH ControlMaster (IPv6 tunnel best-effort)
+      when: dev2_conn_method | default('') == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.shell: |
+        ssh -S "{{ _ctrl_sock6 | default('/dev/null') }}" -O exit 2>/dev/null || true
+      args: { executable: /bin/bash }
+      changed_when: false
+      ignore_errors: true
+
     - name: Remove tunnel control dir (best-effort)
       when: dev2_conn_method | default('') == "tunnel"
       delegate_to: localhost
@@ -738,6 +903,14 @@
         state: absent
       ignore_errors: true
 
+    - name: Remove tunnel control dir (IPv6 tunnel best-effort)
+      when: dev2_conn_method | default('') == "tunnel"
+      delegate_to: localhost
+      ansible.builtin.file:
+        path: "{{ _ctrl_dir6 | default('/tmp/none') }}"
+        state: absent
+      ignore_errors: true
+
     - name: Remove staged passfiles from DEV1 (best-effort)
       when: dev2_conn_method | default('') == "tunnel"
       ansible.builtin.raw: >