while (<DATA>) {
    unless ( /\A#|^$/ ) {
        if (/nfs/) {
          ($remote_mt,$local_mt) = +(split)[0,1];
          $hash{$remote_mt} = $local_mt;
        }
    }
}

##</code><code>##

while (<DATA>) {
  next if /^\s*#/;
  my @f = split(' ', $_);
  if ($f[2] eq "nfs") {
    $hash{$f[0]} = $f[1];
  }
}