I’ve changed the docker-compose-override to use my pihole (which runs unbound) like described in the documentation, but I see a lot of dns-request for ‘.’ domain and tcpdump on the docker server gives me a lot of lines like:
23:48:58.626159 IP (tos 0x0, ttl 64, id 29317, offset 0, flags [none], proto UDP (17), length 56)
172.22.1.254.46752 > 198.41.0.4.53: [bad udp cksum 0x7477 -> 0x5c9b!] 58551% [1au] NS? . ar: . OPT UDPsize=4096 DO (28)
23:48:59.008696 IP (tos 0x0, ttl 64, id 29408, offset 0, flags [none], proto UDP (17), length 56)
172.22.1.254.45738 > 198.41.0.4.53: [bad udp cksum 0x7477 -> 0x5bce!] 62394% [1au] NS? . ar: . OPT UDPsize=1472 DO (28)
23:48:59.388812 IP (tos 0x0, ttl 64, id 309, offset 0, flags [none], proto UDP (17), length 56)
172.22.1.254.52260 > 192.58.128.30.53: [bad udp cksum 0xeea2 -> 0xf8b4!] 47342% [1au] NS? . ar: . OPT UDPsize=4096 DO (28)
What can I check to see what causes this?