Re: sudo slow on DNS lookup, with invalid resolv.conf entries

[deloptes <deloptes@gmail.com>]

x9p wrote:

> If system hostname should ALWAYS be resolvable, whether there is network
> or no, the change in /etc/hosts
> from (default in stretch):
> 127.0.0.1       localhost
> to (my system):
> 127.0.0.1       localhost localhost.localdomain
> 
> is justifiable as it breaks (not literally break, just adds lot of delay)
> to sudo in a non-networked environment.

This is the default from the last stretch install

$ cat /etc/hosts
127.0.0.1       localhost
127.0.1.1       fujitsu.mydomain    fujitsu

so if mydomain or localdomain is not working it will delay.

127.0.1.1       fujitsu fujitsu.mydomain

will not delay because fujitsu is the name of the machine.

in my case mydomain was added at installation time, because cable was
plugged in and the computer (fujitsu) got its IP via the dhcp server on the
local network.

IMO you should look deeper in your use case and see why you get invalid
setup. The problem might be somewhere else.

regards