remove unneeded DETACH-SOCKET condition
deal with IPv6 addresses from usocket
deal with IPv6 addresses from usocket
Merge branch 'socket-detaching'
restore listening to usocket:*wildcard-host*

The IPv6 aware usocket version now compares the listening host address
to usocket:*wildcard-host* using EQ and listens to all IPv4 and IPv6
if it matches.