IPv6 Empty Gateway on WAN

Started by OzziGoblin, June 15, 2025, 09:37:12 AM

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Hi Everyone

this is quite possibly something I've done, but I wanted to check if anyone else is having issues with IPv6 since the update to 25.1.8_1?

I configured IPv6 successfully a few weeks back and it's been working fine since, I upgraded to the new version and I am no longer getting an IPv6 address from my ISP.  The event logs are showing the below:

Notice   opnsense   /usr/local/etc/rc.newwanip: ROUTING: configuring inet default gateway on wan   
Warning   opnsense   /usr/local/etc/rc.configure_interface: Skipping gateway WAN_DHCP6 due to empty 'gateway' property.   
Warning   opnsense   /usr/local/etc/rc.configure_interface: Skipping gateway WAN_DHCP6 due to empty 'monitor' property.   
Notice   opnsense   /usr/local/etc/rc.configure_interface: ROUTING: configuring inet default gateway on wan   
Notice   opnsense   /usr/local/etc/rc.newwanip: ROUTING: configuring inet default gateway on wan   
Warning   opnsense   /usr/local/etc/rc.configure_interface: Skipping gateway WAN_DHCP6 due to empty 'gateway' property.   
Warning   opnsense   /usr/local/etc/rc.configure_interface: Skipping gateway WAN_DHCP6 due to empty 'monitor' property.   
Notice   opnsense   /usr/local/etc/rc.configure_interface: ROUTING: configuring inet default gateway on wan   
Warning   opnsense   /usr/local/sbin/pluginctl: Skipping gateway WAN_DHCP6 due to empty 'gateway' property.   
Warning   opnsense   /usr/local/sbin/pluginctl: Skipping gateway WAN_DHCP6 due to empty 'monitor' property.   
Warning   opnsense   /usr/local/sbin/pluginctl: Skipping gateway WAN_DHCP6 due to empty 'gateway' property.   
Warning   opnsense   /usr/local/sbin/pluginctl: Skipping gateway WAN_DHCP6 due to empty 'monitor' property.   
Warning   opnsense   /usr/local/etc/rc.routing_configure: Skipping gateway WAN_DHCP6 due to empty 'gateway' property.   
Warning   opnsense   /usr/local/etc/rc.routing_configure: Skipping gateway WAN_DHCP6 due to empty 'monitor' property.   
Notice   opnsense   /usr/local/etc/rc.routing_configure: ROUTING: configuring inet default gateway on wan   
Warning   opnsense   /usr/local/etc/rc.routing_configure: Skipping gateway WAN_DHCP6 due to empty 'gateway' property.   
Notice   opnsense   /usr/local/etc/rc.routing_configure: ROUTING: configuring inet default gateway on wan   
Warning   opnsense   /usr/local/etc/rc.routing_configure: Skipping gateway WAN_DHCP6 due to empty 'gateway' property.   
Warning   opnsense   /usr/local/etc/rc.routing_configure: Skipping gateway WAN_DHCP6 due to empty 'monitor' property.   
Notice   opnsense   /usr/local/etc/rc.routing_configure: ROUTING: configuring inet default gateway on wan

I'm running standard DHCPv6 on the WAN and SLAAC on the rest of the network.

I've kicked the connection at the ISP and rebooted the firewall a few times, even disabled and re-enabled IPv6 on the WAN and I still can't get an IP address from the ISP, not sure if this is them or me as a search seems to point to the fact that they aren't providing a gateway in the lease and therefore Opnsense won't assign any address.

Any assistance/advice would be appreciated.

thanks

I believe this is an ISP issue, which they have identified, so I am waiting for a response from them

Looks like automatic DHCPv6? The ISP may not be sending any router advertisements your way, but in general that would also mean connectivity over IPv6 for your clients is impeded.


Cheers,
Franco

Thanks Franco

they have acknowledged that there is a problem on their side, and are busy fixing it.

thanks for confirming

Hoping they will resolve it soon!


Cheers,
Franco

Turned out reverting to prior snapshot resolved the issue.
I then upgraded again, this time got 25.1.9 and it appears to be working.

no idea what caused this.