--protocol now valid.
Also added mask support for rules which alter inside kernel.
diff --git a/iptables.8 b/iptables.8
index c226cef..8aaa69d 100644
--- a/iptables.8
+++ b/iptables.8
@@ -180,7 +180,7 @@
The following parameters make up a rule specification (as used in the
add, delete, replace, append and check commands).
.TP
-.BR "-p, --proto " "[!] \fIprotocol\fP"
+.BR "-p, --protocol " "[!] \fIprotocol\fP"
The protocol of the rule or of the packet to check.
The specified protocol can be one of
.IR tcp ,