From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Roman Mamedov , David Miller , YOSHIFUJI Hideaki , Hannes Frederic Sowa Subject: [ 03/79] ipv6: only apply anti-spoofing checks to not-pointopoint tunnels Date: Fri, 26 Jul 2013 13:46:53 -0700 Message-Id: <20130726204722.265616440@linuxfoundation.org> In-Reply-To: <20130726204721.849052763@linuxfoundation.org> References: <20130726204721.849052763@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hannes Frederic Sowa [ Upstream commit 5c29fb12e8fb8a8105ea048cb160fd79a85a52bb ] Because of commit 218774dc341f219bfcf940304a081b121a0e8099 ("ipv6: add anti-spoofing checks for 6to4 and 6rd") the sit driver dropped packets for 2002::/16 destinations and sources even when configured to work as a tunnel with fixed endpoint. We may only apply the 6rd/6to4 anti-spoofing checks if the device is not in pointopoint mode. This was an oversight from me in the above commit, sorry. Thanks to Roman Mamedov for reporting this! Reported-by: Roman Mamedov Cc: David Miller Cc: YOSHIFUJI Hideaki Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv6/sit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -589,7 +589,7 @@ static int ipip6_rcv(struct sk_buff *skb tunnel->dev->stats.rx_errors++; goto out; } - } else { + } else if (!(tunnel->dev->flags&IFF_POINTOPOINT)) { if (is_spoofed_6rd(tunnel, iph->saddr, &ipv6_hdr(skb)->saddr) || is_spoofed_6rd(tunnel, iph->daddr,