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[LINUX] Kernel should not send out IPv6 autoconfig multicast
packets if the interface is not marked as multicast-capable. Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
This commit is contained in:
kaf24@firebug.cl.cam.ac.uk committed
1 parent
ac85f84b53
commit
e22b1a8b80
1 file changed
+23
@@ -0,0 +1,23 @@
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net/ipv6/addrconf.c | 2 ++
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1 files changed, 2 insertions(+)
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Index: build/net/ipv6/addrconf.c
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===================================================================
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--- build.orig/net/ipv6/addrconf.c
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+++ build/net/ipv6/addrconf.c
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@@ -2462,6 +2462,7 @@ static void addrconf_dad_start(struct in
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spin_lock_bh(&ifp->lock);
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if (dev->flags&(IFF_NOARP|IFF_LOOPBACK) ||
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+ !(dev->flags&IFF_MULTICAST) ||
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!(ifp->flags&IFA_F_TENTATIVE)) {
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ifp->flags &= ~IFA_F_TENTATIVE;
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spin_unlock_bh(&ifp->lock);
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@@ -2546,6 +2547,7 @@ static void addrconf_dad_completed(struc
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if (ifp->idev->cnf.forwarding == 0 &&
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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_MULTICAST) &&
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(ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL)) {
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struct in6_addr all_routers;
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