The routers' IPv6 default route runs over the as211024 mesh as a
proto-static route that blackholes rather than withdrawing when the mesh
flaps (e.g. during ipsec churn on a deploy). With "::" in the recursor's
outgoing.source_address, pdns-recursor kept selecting IPv6 to reach
authoritative servers, stalled on timeouts, and took recursion down with
it whenever the mesh bounced. Drop "::" so upstream recursion goes out
the WAN over IPv4 and stays up; AAAA records are still served fine.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Clients were handed both routers' real addresses as resolvers, so a downed
router meant per-query resolver timeouts. Serve pdns-recursor on the VRRP
VIPs (with non-local bind so the backup can pre-bind them) and advertise the
VIP via kea and radvd, so DNS follows the master. untrusted advertises
Cloudflare over v6 to match its v4 config.
ipsec started before the WAN's public IP was up: stream's wan carries a
static modem address that satisfies wait-online before the DHCP lease, so
libreswan loaded its mesh conns (left=<public IP>) unoriented and never
initiated. Gate stream's wan-online.target on the DHCP default route
instead, and mkForce ipsec onto wan-online.target only (dropping the
strongswan/libreswan multi-user.target pull-in) so the gate actually holds
on both boxes.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
jackos1998