2.5.1-RC IPv6 still bugged with Multi WAN

mrsunfire

After all the trouble with 2.5.0 STABLE I decided to go for the 2.5.1-RC. Now my default gateway works but I don't get a IPv6 address with my primary WAN (igb5). I'm using Multi WAN as failover with one cable line (Dualstack) on igb5 and one DSL line (Dualstack) on igb3. LAN is igb4.

Previous versions after a reboot at first die igb5 cable line got configured and eveything was fine. Now the igb4 DSL line first gets configured. This results that the dhcpd6 client mixes the interfaces all together as it seems. I'm getting these logs:

Mar 25 08:44:03	dhcp6c	47209	unexpected interface (6)
Mar 25 08:44:03	dhcp6c	47209	unexpected interface (6)
Mar 25 08:44:03	dhcp6c	94440	reset a timer on igb5, state=SOLICIT, timeo=5, retrans=31623
Mar 25 08:44:03	dhcp6c	94440	send solicit to ff02::1:2%igb5
Mar 25 08:44:03	dhcp6c	94440	set IA_PD
Mar 25 08:44:03	dhcp6c	94440	set IA_PD prefix
Mar 25 08:44:03	dhcp6c	94440	set option request (len 4)
Mar 25 08:44:03	dhcp6c	94440	set elapsed time (len 2)
Mar 25 08:44:03	dhcp6c	94440	set identity association
Mar 25 08:44:03	dhcp6c	94440	set client ID (len 10)
Mar 25 08:44:03	dhcp6c	94440	Sending Solicit
Mar 25 08:44:02	dhcp6c	47209	reset a timer on pppoe0, state=SOLICIT, timeo=5, retrans=31623
Mar 25 08:44:02	dhcp6c	47209	send solicit to ff02::1:2%pppoe0
Mar 25 08:44:02	dhcp6c	47209	set option request (len 4)
Mar 25 08:44:02	dhcp6c	47209	set elapsed time (len 2)
Mar 25 08:44:02	dhcp6c	47209	set identity association
Mar 25 08:44:02	dhcp6c	47209	set client ID (len 10)
Mar 25 08:44:02	dhcp6c	47209	Sending Solicit
Mar 25 08:43:47	dhcp6c	47209	unexpected interface (6)
Mar 25 08:43:47	dhcp6c	47209	unexpected interface (6)
Mar 25 08:43:47	dhcp6c	94440	reset a timer on igb5, state=SOLICIT, timeo=4, retrans=16314
Mar 25 08:43:47	dhcp6c	94440	send solicit to ff02::1:2%igb5
Mar 25 08:43:47	dhcp6c	94440	set IA_PD
Mar 25 08:43:47	dhcp6c	94440	set IA_PD prefix
Mar 25 08:43:47	dhcp6c	94440	set option request (len 4)
Mar 25 08:43:47	dhcp6c	94440	set elapsed time (len 2)
Mar 25 08:43:47	dhcp6c	94440	set identity association
Mar 25 08:43:47	dhcp6c	94440	set client ID (len 10)
Mar 25 08:43:47	dhcp6c	94440	Sending Solicit

"ps -axww | grep dhcpd" shows this:

17440  -  Ss    0:00.21 /usr/sbin/syslogd -O rfc3164 -s -c -c -l /var/dhcpd/var/run/log -l /tmp/haproxy_chroot/var/run/log -P /var/run/syslog.pid -f /etc/syslog.conf
17986  -  S     0:00.00 sh -c ps -axww | grep dhcpd 2>&1
18370  -  S     0:00.00 grep dhcpd
19487  -  Ss    0:00.15 /usr/local/sbin/dhcpd -user dhcpd -group _dhcp -chroot /var/dhcpd -cf /etc/dhcpd.conf -pf /var/run/dhcpd.pid igb4 igb4.100 igb4.200 igb4.300 igb0 igb4.1000

I have to kill all dhcpd6 service by using "killall -9 dhcp6c" and then reapply the primary WAN (igb5) interface to get it working again.

Sometimes this bug appears with older versions aswell but not after every reboot. The bug report is open since 2016 but nothing changed: https://redmine.pfsense.org/issues/6880

How can I change the configure sequence at boot back to that igb5 is getting at the top?

MikeV7896

Since this is the forum for IPv6 and not the forum for the Development 2.5.1-RC snapshots, you may want to re-post this over there, where the developers would be more likely to see it.

https://forum.netgate.com/category/83/21-02-2-2-5-1-snapshots