ubuntu-20.04 ignores domain name setting from DHCP (option 15)

[Josef Wolf]

On Mon, Aug 09, 2021 at 08:40:32AM -0400, Little Girl wrote:
> This page, although a bit old, might be useful, especially because
> it does mention Ubuntu 18.04, which apparently did things the same
> way Ubuntu 20.04 does when it comes to hostname and domain name:
> 
> https://unix.stackexchange.com/questions/322883/how-to-correctly-set-hostname-and-domain-name

Thanks for your reply, Little Girl!

I know that I can set domain name by editing /tétc/hosts.

But I am not about setting the domain name statically. I am about obeying
domain name setting from DHCP.

That is: when I plug my laptop into the network at .example.com, hostname -f
should give me "host.example.com" When I plug it into somewhere.edu, it should
give me "host.somewhere.edu"

Point is, ubuntu is ignoring the domain name sent by the DHCP server.

-- 
Josef Wolf
jw at raven.inka.de