Tested-by: Florian Wolters florian@florian-wolters.de
I have tested this patch applied to 4.4.113 with positive result within the fli4l project.
On 01/29/2018 01:57 PM, Greg Kroah-Hartman wrote:
4.4-stable review patch. If anyone has any objections, please let me know.
From: Felix Fietkau nbd@nbd.name
[ Upstream commit ad23b750933ea7bf962678972a286c78a8fa36aa ]
Commit "net: igmp: Use correct source address on IGMPv3 reports" introduced a check to validate the source address of locally generated IGMPv3 packets. Instead of checking the local interface address directly, it uses inet_ifa_match(fl4->saddr, ifa), which checks if the address is on the local subnet (or equal to the point-to-point address if used).
This breaks for point-to-point interfaces, so check against ifa->ifa_local directly.
Cc: Kevin Cernekee cernekee@chromium.org Fixes: a46182b00290 ("net: igmp: Use correct source address on IGMPv3 reports") Reported-by: Sebastian Gottschall s.gottschall@dd-wrt.com Signed-off-by: Felix Fietkau nbd@nbd.name Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
net/ipv4/igmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -338,7 +338,7 @@ static __be32 igmpv3_get_srcaddr(struct return htonl(INADDR_ANY); for_ifa(in_dev) {
if (inet_ifa_match(fl4->saddr, ifa))
if (fl4->saddr == ifa->ifa_local) return fl4->saddr;