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ipv6: Don't send rs packets to the interface of ARPHRD_TUNNEL
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>
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1 changed files with 2 additions and 1 deletions
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@ -4219,7 +4219,8 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id,
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send_rs = send_mld &&
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ipv6_accept_ra(ifp->idev) &&
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ifp->idev->cnf.rtr_solicits != 0 &&
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(dev->flags&IFF_LOOPBACK) == 0;
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(dev->flags & IFF_LOOPBACK) == 0 &&
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(dev->type != ARPHRD_TUNNEL);
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read_unlock_bh(&ifp->idev->lock);
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/* While dad is in progress mld report's source address is in6_addrany.
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