When executing ping google.com dnsmasq seems to correctly forward to 8.8.8.8
ubuntu@wastefulsnake-d29e6:~$ sudo tcpdump -ni any port 53 │ping: google.com: Temporary failure in name resolution
tcpdump: data link type LINUX_SLL2 │ubuntu@wastefulsnake-d29e6:~$
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode │
listening on any, link-type LINUX_SLL2 (Linux cooked v2), snapshot length 262144 bytes │
11:41:23.598447 lo In IP 127.0.0.1.38152 > 127.0.0.1.53: 46958+ A? google.com. (28) │
11:41:23.598459 lo In IP 127.0.0.1.38152 > 127.0.0.1.53: 24680+ AAAA? google.com. (28) │
11:41:23.598520 enp3s0 Out IP 10.0.10.136.35177 > 8.8.8.8.53: 27665+ A? google.com. (28) │
11:41:23.598540 enp3s0 Out IP 10.0.10.136.40122 > 8.8.8.8.53: 36571+ AAAA? google.com. (28) │
11:41:28.603525 lo In IP 127.0.0.1.38152 > 127.0.0.1.53: 46958+ A? google.com. (28) │
11:41:28.603539 lo In IP 127.0.0.1.38152 > 127.0.0.1.53: 24680+ AAAA? google.com. (28) │
11:41:28.603583 enp3s0 Out IP 10.0.10.136.35177 > 8.8.8.8.53: 27665+ A? google.com. (28) │
11:41:28.603603 enp3s0 Out IP 10.0.10.136.40122 > 8.8.8.8.53: 36571+ AAAA? google.com. (28) │
8.8.8.8 is also reachable:
ubuntu@wastefulsnake-d29e6:~$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=115 time=15.2 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=115 time=13.8 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=115 time=12.0 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=115 time=13.0 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=115 time=12.1 ms
64 bytes from 8.8.8.8: icmp_seq=6 ttl=115 time=12.1 ms
However, while name resolution works for registered hosts (i.e. in dnsmasq.hosts:
ubuntu@wastefulsnake-d29e6:~$ cat /etc/dnsmasq.hosts │ubuntu@nearbypanda-a54ec:~$ ls
# Master node │ubuntu@nearbypanda-a54ec:~$ exit
10.0.10.136 wastefulsnake-d29e6 │logout
10.0.10.65 nearbypanda-a54ec
ubuntu@wastefulsnake-d29e6:~$ dig nearbypanda-a54ec
; <<>> DiG 9.18.30-0ubuntu0.24.04.2-Ubuntu <<>> nearbypanda-a54ec
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16987
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;nearbypanda-a54ec. IN A
;; ANSWER SECTION:
nearbypanda-a54ec. 0 IN A 10.0.10.65
;; Query time: 0 msec
;; SERVER: ::1#53(::1) (UDP)
;; WHEN: Fri Mar 13 12:21:36 UTC 2026
;; MSG SIZE rcvd: 62
and also ssh ubuntu@nearbypanda-a54ec (though it takes some time), all resolutions over 8.8.8.8 fail, because it does not seem to respond which is odd given that we can ping it.
When executing
ping google.comdnsmasq seems to correctly forward to 8.8.8.88.8.8.8 is also reachable:
However, while name resolution works for registered hosts (i.e. in
dnsmasq.hosts:and also
ssh ubuntu@nearbypanda-a54ec(though it takes some time), all resolutions over 8.8.8.8 fail, because it does not seem to respond which is odd given that we can ping it.