Re: [gentoo-user] ifconfig - display/list hostname with IP address

On 03/02/2017 02:11 PM, Alan McKinnon wrote:
> On 02/03/2017 22:57, thelma@×××××××××××.com wrote:
>> running "ifconfig" is it possible to display hostname, especially with
>> "tun" interfaces.
>
> No.
>
> ifconfig operates at layer 2.
> Hostnames is a dns/resolver concept operating at a much higher level.
>
> DNs relies on layer 2 so using rDNS to display hostnames (or worse, that
> abomination called /etc/hosts) is logically circular and nonsensical
>
> Hostnames are there to abstract addresses when addresses don't matter.
> Addresses very much do matter at the ifconfig level so if you need them
> then, you probably shouldn't be looking at ifconfig at all (don't you
> know your own addresses?)
>
> And finally the relationship between address and names is many<->many,
> so which one you gonna use?

Thanks for the input Alan,
Yes, I do remember them when I'm setting it UP; but after a while I have
to think if I get the correct IP or tun address.

I think "yellow" note sticker on the side of the monitor will do the
trick :-)

--
Thelma