Friday, March 14, 2025

Ubuntu Server DNS problem.

After a PC restart if computer got a new IP-address from DHCP it takes for ever for it to show up in DNS.

Doing a nslookup mycomputername from the ubuntu server it 
showed that it wasn't using the DHCP DNS server but used its own.
DNS was from 127.0.0.53.

I ran
sudo apt install resolvconf

After that nslookup shows the correct DNS server :)
 
at
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