I was trying to perform a DNS query over IPv6 from my laptop using
dig, and it didn’t work. Here are the details:
ping6 google.com works fine
dig -6 google.com times out due to being unable to reach any servers
dig -6 @fd85:x:x::1 google.com works fine
dig -6 @2601:y:y:y::1 google.com also works fine
The last two requests are being made directly to my router where I am running dnsmasq.
I couldn’t figure out how to see what DNS servers are being sent to my laptop over DHCPv6, but on my phone it lists these three (set automatically):
192.168.1.1 fd85:x:x::1 2601:y:y:y::1
The reason why I am asking on this forum is because it appears to be a problem only for my laptop, since my phone correctly sees the DNSv6 servers.
I am running Ubuntu 20.04 and my network settings show the IPv6 method and DNS as ‘automatic’.
Nevermind, this is because nothing is listening locally for dns requests over ipv6, see this github thread: https://github.com/systemd/systemd/issues/12159
Answered by Jay Schauer on November 11, 2021
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