I am running Version 6.12.3 and may have a related issue. I am using IPv4+IPv6 with DHCP. The nameserver entry for IPv6 has '%br0' at the end which can't be parsed by avahi-demon and is then ignored. I only noticed it because smokeping keeps throwing errors because of it:
ERROR: output of '/usr/bin/dig localhost' does not match (?^i:query time:\s+([0-9.]+)\smsec.*)
at (eval 105) line 1.
ERROR: output of '/usr/bin/dig localhost' does not match (?^i:query time:\s+([0-9.]+)\smsec.*)
at (eval 103) line 1.
Content of resolv.conf
# Generated by dhcpcd from br0.dhcp, br0.ra
domain localdomain
nameserver 192.168.178.2
nameserver fe80::1ae8:29ff:fe42:1f04%br0
When I manually edit resolv.conf (on Unraid or the smokeping container) it starts working. But after some time it's updated again. As it should. But without '%br0' at the end.
Not sure if it's related, but avahi-daemon is started and restarted within a few seconds during startup. syslog:
Aug 17 10:28:22 MeshifyUnraid emhttpd: shcmd (21): /etc/rc.d/rc.avahidaemon start
Aug 17 10:28:22 MeshifyUnraid root: Starting Avahi mDNS/DNS-SD Daemon: /usr/sbin/avahi-daemon -D
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Found user 'avahi' (UID 61) and group 'avahi' (GID 214).
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Successfully dropped root privileges.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: avahi-daemon 0.8 starting up.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Successfully called chroot().
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Successfully dropped remaining capabilities.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Loading service file /services/sftp-ssh.service.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Loading service file /services/smb.service.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Loading service file /services/ssh.service.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Joining mDNS multicast group on interface br0.IPv6 with address 2a00:6020:12b2:4567:89ca:80ff:fe78:ae7a.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: New relevant interface br0.IPv6 for mDNS.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Joining mDNS multicast group on interface br0.IPv4 with address 192.168.178.145.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: New relevant interface br0.IPv4 for mDNS.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Network interface enumeration completed.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Registering new address record for 2a00:6020:12b2:4567:89ca:80ff:fe78:ae7a on br0.*.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Registering new address record for 192.168.178.145 on br0.IPv4.
Aug 17 10:28:22 MeshifyUnraid avahi-daemon[4102]: Failed to parse address 'fe80::1ae8:29ff:fe42:1f04%br0', ignoring.
Aug 17 10:28:22 MeshifyUnraid emhttpd: shcmd (22): /etc/rc.d/rc.avahidnsconfd start
Aug 17 10:28:22 MeshifyUnraid root: Starting Avahi mDNS/DNS-SD DNS Server Configuration Daemon: /usr/sbin/avahi-dnsconfd -D
Aug 17 10:28:22 MeshifyUnraid avahi-dnsconfd[4116]: Successfully connected to Avahi daemon.
...
Aug 17 10:28:38 MeshifyUnraid emhttpd: shcmd (65): /etc/rc.d/rc.avahidaemon restart
Aug 17 10:28:38 MeshifyUnraid root: Stopping Avahi mDNS/DNS-SD Daemon: stopped
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[4102]: Got SIGTERM, quitting.
Aug 17 10:28:38 MeshifyUnraid avahi-dnsconfd[4116]: read(): EOF
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[4102]: Leaving mDNS multicast group on interface br0.IPv6 with address 2a00:6020:12b2:4567:89ca:80ff:fe78:ae7a.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[4102]: Leaving mDNS multicast group on interface br0.IPv4 with address 192.168.178.145.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[4102]: avahi-daemon 0.8 exiting.
Aug 17 10:28:38 MeshifyUnraid root: Starting Avahi mDNS/DNS-SD Daemon: /usr/sbin/avahi-daemon -D
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Found user 'avahi' (UID 61) and group 'avahi' (GID 214).
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Successfully dropped root privileges.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: avahi-daemon 0.8 starting up.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Successfully called chroot().
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Successfully dropped remaining capabilities.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Loading service file /services/sftp-ssh.service.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Loading service file /services/smb.service.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Loading service file /services/ssh.service.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Joining mDNS multicast group on interface br0.IPv6 with address 2a00:6020:12b2:4567:89ca:80ff:fe78:ae7a.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: New relevant interface br0.IPv6 for mDNS.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Joining mDNS multicast group on interface br0.IPv4 with address 192.168.178.145.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: New relevant interface br0.IPv4 for mDNS.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Network interface enumeration completed.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Registering new address record for 2a00:6020:12b2:4567:89ca:80ff:fe78:ae7a on br0.*.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Registering new address record for 192.168.178.145 on br0.IPv4.
Aug 17 10:28:38 MeshifyUnraid avahi-daemon[5402]: Failed to parse address 'fe80::1ae8:29ff:fe42:1f04%br0', ignoring.
Aug 17 10:28:38 MeshifyUnraid emhttpd: shcmd (66): /etc/rc.d/rc.avahidnsconfd restart
Aug 17 10:28:38 MeshifyUnraid root: Stopping Avahi mDNS/DNS-SD DNS Server Configuration Daemon: stopped
Aug 17 10:28:38 MeshifyUnraid root: Starting Avahi mDNS/DNS-SD DNS Server Configuration Daemon: /usr/sbin/avahi-dnsconfd -D
Aug 17 10:28:38 MeshifyUnraid avahi-dnsconfd[5411]: Successfully connected to Avahi daemon.