Name resolution of dot terminated hostnames
Florian Weimer
fweimer@redhat.com
Fri May 24 19:20:00 GMT 2019
* Etienne Buira:
> On a Gentoo box (with Gentoo packaged glibc 2.29-r2), libc was unable to
> resolve 'localhost.' (with the trailing dot), although it can resolve
> 'localhost', and conf looks fine.
>
> With older libcs, (at least 2.28 based), libc can resolve the dot
> terminated hostname just fine.
What's your /etc/nsswitch.conf file? What's in /etc/hosts?
> hostname(7) man page reads 'If the input name ends with a trailing dot,
> the trailing dot is removed, and the remaining name is looked up with no
> further processing.'
This covers DNS processing (“Internet name resolver”) only. A newer
version of the manpage should reflect that more
Thanks,
Florian
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