netfilter: nf_conntrack_netlink: fix inverted IPv6 tuple filter

ctnetlink_filter_match_tuple() returns 0 (no match) when the IPv6
source or destination address differs from the filter, because the
!ipv6_addr_cmp() test is inverted.  ipv6_addr_cmp() returns 0 when
the addresses are equal, so the negation makes the branch trigger on
a match instead of a mismatch, which is the opposite of the IPv4
path above.

Drop the '!' so the IPv6 branch returns 0 only when the addresses
differ, matching the IPv4 semantics and the caller's expectation.

Fixes: cb8aa9a3affb ("netfilter: ctnetlink: add kernel side filtering for dump")
Cc: stable@vger.kernel.org
Signed-off-by: Liu Chao <liuc63@xiaopeng.com>
Reviewed-by: Weibin Liu <liuwb@xiaopeng.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

0 files changed, 0 insertions, 0 deletions