SYNOPSIS
	string query_ip_name(object ob)

DESCRIPTION
	Give the ip-name for user the current user or for the
	optional argument ob. An asynchronous process 'hname' is used
	to find out these names in parallel. If there are any failures
	to find the ip-name, then the ip-number is returned instead.

SEE ALSO
	query_ip_number(E)
