IGMP is used on IPv4 networks set setup multicast group memberships. On IPv6, this job is done by Multicast Listener Discovery (MLD), which uses ICMPv6 packets rather than using its own IP protocol number. The nwfilter documentation lists "igmp-ipv6" as one of the possible protocols, but this is ignored (and stripped from the xml). This patch removes that erroneous reference. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1038888 ---  docs/formatnwfilter.html.in | 2 +-  1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/formatnwfilter.html.in b/docs/formatnwfilter.html.in index 4a60e2e..d1e5d31 100644 --- a/docs/formatnwfilter.html.in +++ b/docs/formatnwfilter.html.in @@ -1781,7 +1781,7 @@        <h5><a name="nwfelemsRulesProtoMiscv6">IGMP, ESP, AH, UDPLITE, 'ALL' over IPv6</a></h5>      <p> -      Protocol ID: <code>igmp-ipv6</code>, <code>esp-ipv6</code>, <code>ah-ipv6</code>, <code>udplite-ipv6</code>, <code>all-ipv6</code> +      Protocol ID: <code>esp-ipv6</code>, <code>ah-ipv6</code>, <code>udplite-ipv6</code>, <code>all-ipv6</code>        <br/>        Note: The chain parameter is ignored for this type of traffic        and should either be omitted or set to <code>root</code>.