IPv6 Dual WAN / Policy Based Routing issue

[Maurice]

Hi all,

I'm trying to get a simple Dual WAN / Dual LAN setup running:
Two WAN interfaces (DHCPv6), two LAN interfaces (LAN1 tracks WAN1, LAN2 tracks WAN2). The WAN1 gateway (WAN1_DHCP6) is the default one. To get traffic originating from LAN2 being routed via WAN2, the gateway is set to WAN2_DHCP6 in the allow-all firewall rule for LAN2 (Policy Based Routing).

No success. LAN1 works just fine, but there is no Internet access from LAN2. This is not a DNS issue (DNS servers are set to external public servers in Router Advertisements). A traceroute from a host in LAN2 to a public IPv6 address doesn't get further than the first hop (router). As expected, switching the default gateway to WAN2_DHCP6 gets LAN2 working and breaks LAN1 Internet connectivity.

Ideas? This should be pretty straight forward, but maybe I am missing something.

Cheers

Maurice

[patrick7]

Seems to be the same issue as described here https://forum.opnsense.org/index.php?topic=10846.msg49512#msg49512

[Maurice]

Indeed, looks like the same issue.

Is there anyone with a working IPv6 Dual WAN setup? Otherwise I'll create a bug report on GitHub.

[patrick7]

I opened a github issue: https://github.com/opnsense/core/issues/3424

[Maurice]

Thanks, I +1ed it.