Messages

Thank you for linking that guide. The addresses shown in the web UI aren't very clear on what they are :/.

I did a packet capture and found that ISP was giving me a /56 during DHCPv6.
changed my WAN DHCPv6 settings to:
 Prefix delegation size: 56
request prefix only: off
send prefix hint: on
optional prefix id: blank
optional interface id: blank

And followed the guide for router advertisements setup.
After restarting my local system, SLAAC worked and I could ping internally and externally.

Oh. 2604:5500:7032:0:2e0:67ff:fe2c:69a4/64
is NOT 2604:5500:7032:1234::/64 so everything with 604:5500:7032:1234 prefix isnt being routed correctly.

quote is not edit

I see that in interfaces>overview, under the "IPv6" column, WAN has a value of
2604:5500:7032:0:2e0:67ff:fe2c:69a4/64
2604:5500:7032::7a1/128
fe80::2e0:67ff:fe2c:69a4/64

 and LAN has a value of
2604:5500:7032:1234:2e0:67ff:fe2c:69a5/56
fe80::2e0:67ff:fe2c:69a5/64

is the issue the 64-56 mismatch between WAN and LAN?

I am running OPNsense 25.1.12 and trying to get ipv6 working. I am unable to ping my router (or anything else) from machines on the local network.

Setup and information:
WAN set to DHCPv6. LAN set to Track Interface with parent interface WAN.
router can ping -6 google.com successfully.

Router has LAN ip of 2604:5500:7032:1234:2e0:67ff:fe2c:69a5/56
Local machine has IP of 2604:5500:7032:1234::1986

packet capture of LAN interface shows packets from local machine: Neighbor Solicitation for 2604:5500:7032:1234:2e0:67ff:fe2c:69a5
so i dont think its a firewall issue

any idea why ipv6 isn't working on my LAN? how can i troubleshoot this?