doc: refer to meta protocol in icmp and icmpv6

Instead of meta nftproto, which is a typo.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/doc/payload-expression.txt b/doc/payload-expression.txt
index eb98e5d7898c19cee69bbf73c98a1c603ecfea5b..e1a10252e95b473af5ca5d9e27236cce8a340023 100644 (file)
--- a/doc/payload-expression.txt
+++ b/doc/payload-expression.txt
@@ -122,7 +122,7 @@ ICMP HEADER EXPRESSION
 This expression refers to ICMP header fields. When using it in *inet*,
 *bridge* or *netdev* families, it will cause an implicit dependency on IPv4 to
 be created. To match on unusual cases like ICMP over IPv6, one has to add an
-explicit *meta nftproto ipv6* match to the rule.
+explicit *meta protocol ip6* match to the rule.
 
 .ICMP header expression
 [options="header"]
@@ -207,7 +207,7 @@ ICMPV6 HEADER EXPRESSION
 This expression refers to ICMPv6 header fields. When using it in *inet*,
 *bridge* or *netdev* families, it will cause an implicit dependency on IPv6 to
 be created. To match on unusual cases like ICMPv6 over IPv4, one has to add an
-explicit *meta nftproto ipv4* match to the rule.
+explicit *meta protocol ip* match to the rule.
 
 .ICMPv6 header expression
 [options="header"]