Bug#2304: umount calls gethostbyname() at consequence
When NFS mounts are unmounted, umount calls gethostbyname() unnecessarily (the
IP address of the server is available from /etc/mtab).
The consequence of this is that, during shutdown, no name resolvers are
necessarily available, causing the umount to fail. The mounted partitions
underlying the NFS mounts will then fail to get unmounted, and will undergo a
complete fsck upon reboot.
I currently maintain the mount package; this bug report is mostly for my own