dpinger fails to start with DHCPv6 on WAN

[abplfab]

If WAN is set to DHCPv6 (with options "Request only an IPv6 prefix", "Prefix delegation size 60") dpinger fails to start with a PHP Error.
In my case WAN gets IPv6 fe80::20d:b9ff:fe48:58bc from the cable modem.
Workaround: set "Monitor IP" on the WAN_DHCP6 Gateway to some reachable IPv6 Address
OPNsense 19.7

[maurice-w]

I have the same issue, it affects all gateways with link-local addresses (including static ones): https://forum.opnsense.org/index.php?topic=13515.0
Seems to be caused by improper handling of zone indices. Worked in 19.1.

[mr44er]

Same here.

I had suddenly 2 stopped instances of dpinger for WAN_DHCP6 which can't work.

My workaround so far was disabling interface, delete the double entries for gateways, reboot, enabling interface, gateway monitoring off.

[mr44er]

There's something more going on with the gateways and giving priority.

I played a bit around and noticed that I can't set priority for dynamically created GWs over PPPoE. ipv4 and ipv6 GWs are set to 254 after connection goes up.

I changed to lower level (50) to give my PPPoE higher prio. It doesn't let me do this, because far gateway is unticked (GW-IP from ISP). Second try with activating far gateway does create a new gateway (with GW-IP given from ISP set to static) and whole connection goes nuts, because both dynamically created GWs are completely gone.

I deactivated PPPoE-IF completely and you can see (red dot) the leftover GW-IP.

Second thing is wrong displaying in WebIF. vigornic shows as active, but never was ticked as upstream-GW, but gw_winsim is.

Change default gw is activated under system->settings if that info is needed.

Edit:
I will open another ticket

[maurice-w]

Seems to be fixed in 19.7.1 (well, works for me). I guess this line from the changelog refers to it:
system: scoped IPv6 "%" could confuse mwexecf(), use plain mwexec() instead
Can someone confirm and close?

[mr44er]

Yeah, works now for me, too but I have now a new one with 2 WANs. :)
-> #3601

[fichtner]

Thanks for confirming.