.I local-port
and
.I remote-port
-must be numbers;
+may be numbers or UDP service names;
.I remote-addr
-may be a hostname or an IP address in dotted-quad format. Exactly two
+may be a hostname, an IPv4 address in dotted-quad format, or an IPv6
+address in hex-and-colons format (this last obviously requires selecting
+a different delimeter character). Exactly two
.B peer
directives must be present. The one first registered is the
.I left
.I different
local ports.
.TP
+.BI peer4: name : local-port : remote-addr : remote-port
+As for
+.I peer
+(see above), but force the use of IPv4.
+.TP
+.BI peer6: name : local-port : remote-addr : remote-port
+As for
+.I peer
+(see above), but force the use of IPv6.
+.TP
.BI include: file
Read more directives from
.IR file .