Root cause: the doublezero-agent on mia-sw01 manages Tunnel500's ACL
(SEC-USER-500-IN) and drops outbound gossip with src 137.239.194.65.
The agent overwrites any custom ACL entries.
Fix: create a separate GRE tunnel (Tunnel100) using mia-sw01's free
LAN IP (209.42.167.137) as tunnel source. This tunnel goes over the
ISP uplink, completely independent of the DZ overlay:
- mia-sw01: Tunnel100 src 209.42.167.137, dst 186.233.184.235
- biscayne: gre-ashburn src 186.233.184.235, dst 209.42.167.137
- Link addresses: 169.254.100.0/31
Playbook changes:
- ashburn-relay-mia-sw01: Tunnel100 + Loopback101 + SEC-VALIDATOR-100-IN
- ashburn-relay-biscayne: gre-ashburn tunnel + updated policy routing
- New template: ashburn-routing-ifup.sh.j2 for boot persistence
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
A. F. Dudley