IPV6_TCLASS missing from ip6(4)

[gnn at freebsd.org]

At Wed, 20 Feb 2008 18:25:05 +0000,
Bruce M Simpson wrote:
> 
> I just noticed that whilst the socket code appears to support 
> IPV6_TCLASS, we don't document it.
> 
> I  haven't raised a PR for this issue yet nor have I written a patch.
> 

Please do both :-)

Thanks,
George