[Dnsmasq-discuss] Questions about /etc/hosts

[Petr Menšík]

I think we would need to know, which distribution and version you are
running. /etc/hosts is not directly controlled by dnsmasq. It is often
updated by system installation, which varies across distributions.

Depends on how t470 and t470.zbmc.eu names are used any by what
services. I would recommend --local=/zbmc.eu/ or better auth-zone=zbmc.eu.

I doubt host 127.0.1.1 were added automatically. Unless you don't know
what does use it, I would recommend to comment it out and reboot. Unless
you see any visible failures or delays during boot, it is safe to be
removed :)

Cheers,
Petr

On 2/10/22 20:24, Chris Green wrote:
> When running dnsmasq it (by default) uses /etc/hosts to provide some
> system's addresses.
>
> Some of my systems have their names in the /etc/hosts file against
> a loopback address so host t470 has:-
>
>     127.0.0.1   localhost
>     127.0.1.1   t470.zbmc.eu t470
>
>
> While others only have their names against their (static) IP address
> so host backup has:-
>
>     192.168.1.1     2860n                   # Draytek router, internet
>     192.168.1.2     dns.zbmc.eu dns         # this Pi running dnsmasq
>     192.168.1.3     esprimo zbmc.eu         # my desktop system
>     192.168.1.4     backup.zbmc.eu backup   # backup Raspberry Pi, also DNS/DHCP backup
>
>
> Is that 127.0.1.1 loopback address just so that there is an IP for a
> system to refer to itself (particularly in the case where it has DHCP
> assigned IP so there isn't a fixed address for itself)?
>
>
> Where a system has a static/fixed IP is it OK to have only the
> 'localhost' loopback address and the 'real' static IP for 'self'?
> E.g. can one have:-
>
>     127.0.0.1   localhost
>
>     192.168.1.1     2860n                   # Draytek router, internet
>     192.168.1.2     dns.zbmc.eu dns         # this Pi running dnsmasq
>     192.168.1.3     esprimo zbmc.eu         # my desktop system
>     192.168.1.4     backup.zbmc.eu backup   # backup Raspberry Pi, also DNS/DHCP backup
>
> As the /etc/hosts file on all of those systems (which have static IP)?
>
-- 
Petr Menšík
Software Engineer
Red Hat, http://www.redhat.com/
email: pemensik at redhat.com
PGP: DFCF908DB7C87E8E529925BC4931CA5B6C9FC5CB