Netstat only has one option, -n or --numeric, to disable resolution of host
names, user names and port names.  However, in most cases the user only
really cares about disabling host-name resolution, since that's what
usually causes netstat to hang or run slowly.  There should be more
granularity in the selection of what should be disabled.

The enclosed patch adds three options to netstat: --numeric-hosts,
--numeric-ports and --numeric-users, which disables resolution of each of
those without affecting the others.