Before the initroduction of nss-resolve, putting mdns before dns was equivalent
to putting it after files, since there wasn't anything inbetween. But when systemd
is installed first we get:
hosts: files resolve [!UNAVAIL=return] myhostname dns
which the existing scriptlet here would modify to:
hosts: files resolve [!UNAVAIL=return] myhostname mdns4_minimal [NOTFOUND=return] dns
but we really want:
hosts: files myhostname mdns4_minimal [NOTFOUND=return] resolve [!UNAVAIL=return] dns
so mdns4 has higher priority than resolve.
This applies to F33 and rawhide.