pfSense

After installing 22.05.b.20220531.0600, I noticed that the System / Routing logs showed the following:

• 2001:db8:4407:41c:20c:29ff:feae:75dc is the lan (ixv5) IPv6 address assigned from the tracked interface.
• fe80::20c:29ff:feae:75dc is the lan (ixv5) Link-Local address.
• lan (ixv5) shows DHCPv6 Server and RA disabled in the GUI. The interface has Tracked Interface set.
• ixv0/2/3/4/6 have DHCPv6 Server and RA enabled. The interface has IPv6 static addresses.

Jun 5 13:03:26     radvd     51368     RDNSS address 2001:db8:4407:41c:20c:29ff:feae:75dc received on ixv0 from fe80::20c:29ff:feae:75dc is not advertised by us
Jun 5 13:03:26     radvd     51368     RDNSS address 2001:db8:4407:41c:20c:29ff:feae:75dc received on ixv4 from fe80::20c:29ff:feae:75dc is not advertised by us
Jun 5 13:03:26     radvd     51368     RDNSS address 2001:db8:4407:41c:20c:29ff:feae:75dc received on ixv2 from fe80::20c:29ff:feae:75dc is not advertised by us
Jun 5 13:03:26     radvd     51368     RDNSS address 2001:db8:4407:41c:20c:29ff:feae:75dc received on ixv3 from fe80::20c:29ff:feae:75dc is not advertised by us
Jun 5 13:03:26     radvd     51368     RDNSS address 2001:db8:4407:41c:20c:29ff:feae:75dc received on ixv6 from fe80::20c:29ff:feae:75dc is not advertised by us 

I also noticed that some hosts behind the firewall were getting two additional IPv6 addresses assigned from lan (ixv5), on top of the correct IPv6 address leased by the DHCPv6 Server. I rebooted the firewall and the issue persisted. I then re-saved the DHCPv6 Server and Router Advertisements config for ixv5, and the issue was resolved.

I ran a diff on the config.xml file before and after the issue was resolved, and noticed that the difference was that the file contained an entry under dhcpdv6 for lan (ixv5) with <ramode>disabled</ramode> included. When I was experiencing the issue, the file did not contain any entry for lan under dhcpdv6.