From: jianghaoran jianghaoran@kylinos.cn
stable inclusion from stable-v5.10.121 commit 4d85201adb65013b1455050a8a814f792d4ee3a6 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5L6CQ
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit b52e1cce31ca721e937d517411179f9196ee6135 ]
ARPHRD_TUNNEL interface can't process rs packets and will generate TX errors
ex: ip tunnel add ethn mode ipip local 192.168.1.1 remote 192.168.1.2 ifconfig ethn x.x.x.x
ethn: flags=209<UP,POINTOPOINT,RUNNING,NOARP> mtu 1480 inet x.x.x.x netmask 255.255.255.255 destination x.x.x.x inet6 fe80::5efe:ac1e:3cdb prefixlen 64 scopeid 0x20<link> tunnel txqueuelen 1000 (IPIP Tunnel) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 3 dropped 0 overruns 0 carrier 0 collisions 0
Signed-off-by: jianghaoran jianghaoran@kylinos.cn Link: https://lore.kernel.org/r/20220429053802.246681-1-jianghaoran@kylinos.cn Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- net/ipv6/addrconf.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 76b90d2a537c..e7feb30ca05d 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -4204,7 +4204,8 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id, send_rs = send_mld && ipv6_accept_ra(ifp->idev) && ifp->idev->cnf.rtr_solicits != 0 && - (dev->flags&IFF_LOOPBACK) == 0; + (dev->flags & IFF_LOOPBACK) == 0 && + (dev->type != ARPHRD_TUNNEL); read_unlock_bh(&ifp->idev->lock);
/* While dad is in progress mld report's source address is in6_addrany.