Hi,
I'm testing a DNS server in a rootless container using pasta, and I have seen that the IPv6 UDP packets are not reaching the service:
$ dig www.google.com @fddc:f797:78ef:70::5 +short
;; communications error to fddc:f797:78ef:70::5#53: timed out
;; communications error to fddc:f797:78ef:70::5#53: timed out
;; communications error to fddc:f797:78ef:70::5#53: timed out
; <<>> DiG 9.18.15 <<>> www.google.com @fddc:f797:78ef:70::5 +short
;; global options: +cmd
;; no servers could be reached
TCP over IPv6 and UDP, TCP over IPv4 works fine:
$ dig www.google.com @fddc:f797:78ef:70::5 +short +tcp
216.239.38.120
$ dig www.google.com @192.168.7.5 +short
216.239.38.120
$ dig www.google.com @192.168.7.5 +short +tcp216.239.38.120
The pasta process is running with these arguments:
/usr/bin/pasta --config-net -u 53-53:53-53 -t 53-53:53-53 -t 3003-3003:3003-3003 -T none -U none --no-map-gw --netns /run/user/1002/netns/netns-378b62b8-bf27-3b51-1fb1-e2ebb7119647
I'm using passt-0^20230509.g96f8d55-1.fc38.x86_64 from Fedora CoreOS 38. Is this a known bug? or am I doing something wrong?
Thank you.