(any protocol) or failing that
.BI /etc/authbind/byaddr/ addr : port
(IPv4 only)
-is tested, in the same manner as above. (Here
+is tested, in the same manner as above. Here
.I addr
is as from
-.BR inet_ntop .)
+.BR inet_ntop .
+Since this is not completely predictable for IPv6,
+for IPv6 a variant of
+.I addr
+is also tested which does not contain any ommitted zeroes or colons.
.PP
Thirdly, if the question is still unresolved, the file
.BI /etc/authbind/byuid/ uid