--- /dev/null
+This extension is loaded if `--protocol ipv6-mh' or `--protocol mh' is
+specified. It provides the following option:
+.TP
+[\fB!\fP] \fB--mh-type\fP \fItype\fP[\fB:\fP\fItype\fP]
+This allows specification of the Mobility Header(MH) type, which can be
+a numeric MH
+.IR type ,
+.IR type
+or one of the MH type names shown by the command
+.nf
+ ip6tables -p ipv6-mh -h
+.fi