Martin Weinelt 8e70f11f88 networking: clarify search and domain option descriptions ...

There is no canonical way to set a system domain name any longer. The one
we previously used was the NIS/YP one, but that is pointless these days.

The hostname is set up through /etc/hostname, but hostname(5) states that
it should only contain 64 7-bit ASCII characters, so it cannot be used
to cover the domain name.

We still support setting the domain name to complete the `fqdn` option
and as a central option to reference the domain name from. If anyone
wants a NIS/YP domain name set, do it yourself..

We then clarify that the domain option has nothing to do with DNS
resolution anymore and search should be configured instead.

Finally explain the purpose of the ndots option in the context of search
domains, since they decide when we stop considering the search domains
when querying names with more than one dot.

2025-07-06 00:59:37 +02:00

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