Another update.
I unplugged and reconnected my server to see if it would update the DNS servers with my backup Pihole.
Curiously enough, it only added the first DNS server to resolv.conf and not both even though .22 and .23 are both in the GUI as IPv4 DNS servers.
resolv.conf is as follows:
# Generated by dhcpcd from br0.dhcp
domain KTS20
nameserver 192.168.0.22
It lost the second DNS server
At least now I know how to manually add the second DNS server, so thank you @ljm42 for the link!
The log says the following:
Mar 19 13:32:07 UnRaid kernel: mlx4_en: eth0: Link Down
Mar 19 13:32:07 UnRaid kernel: br0: port 1(eth0) entered disabled state
Mar 19 13:32:27 UnRaid avahi-dnsconfd[18816]: DNS Server 192.168.0.22 removed (interface: 7.IPv4)
Mar 19 13:32:27 UnRaid dnsmasq[19036]: no servers found in /etc/resolv.conf, will retry
Mar 19 13:32:27 UnRaid dnsmasq[19036]: reading /etc/resolv.conf
Mar 19 13:32:27 UnRaid dnsmasq[19036]: using nameserver 192.168.0.22#53
Mar 19 13:32:43 UnRaid kernel: mlx4_en: eth0: Link Up
Mar 19 13:32:43 UnRaid kernel: br0: port 1(eth0) entered blocking state
Mar 19 13:32:43 UnRaid kernel: br0: port 1(eth0) entered forwarding state
Mar 19 13:34:16 UnRaid avahi-dnsconfd[18816]: New DNS Server 192.168.0.22 (interface: 7.IPv4)
Mar 19 13:34:16 UnRaid dnsmasq[19036]: no servers found in /etc/resolv.conf, will retry
Mar 19 13:34:16 UnRaid dnsmasq[19036]: reading /etc/resolv.conf
Mar 19 13:34:16 UnRaid dnsmasq[19036]: using nameserver 192.168.0.22#53