Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf

Florian Westhal says:

====================
netfilter: bugfixes for net

The following set contains four netfilter patches for your *net* tree.

When there are multiple Contact headers in a SIP message its possible
the next headers won't be found because the SIP helper confuses relative
and absolute offsets in the message.  From Igor Ryzhov.

Make the nft_concat_range self-test support socat, this makes the
selftest pass on my test VM, from myself.

nf_conntrack_irc helper can be tricked into opening a local port forward
that the client never requested by embedding a DCC message in a PING
request sent to the client.  Fix from David Leadbeater.

Both have been broken since the kernel 2.6.x days.

The 'osf' match might indicate success while it could not find
anything, broken since 5.2 .  Fix from Pablo Neira.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>