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diff -pruN ../orig-linux-2.6.16.29/net/ipv6/addrconf.c ./net/ipv6/addrconf.c
--- ../orig-linux-2.6.16.29/net/ipv6/addrconf.c 2006-09-12 19:02:10.000000000 +0100
+++ ./net/ipv6/addrconf.c 2006-09-19 13:59:11.000000000 +0100
@@ -2471,6 +2471,7 @@ static void addrconf_dad_start(struct in
spin_lock_bh(&ifp->lock);
if (dev->flags&(IFF_NOARP|IFF_LOOPBACK) ||
+ !(dev->flags&IFF_MULTICAST) ||
!(ifp->flags&IFA_F_TENTATIVE)) {
ifp->flags &= ~IFA_F_TENTATIVE;
spin_unlock_bh(&ifp->lock);
@@ -2555,6 +2556,7 @@ static void addrconf_dad_completed(struc
if (ifp->idev->cnf.forwarding == 0 &&
ifp->idev->cnf.rtr_solicits > 0 &&
(dev->flags&IFF_LOOPBACK) == 0 &&
+ (dev->flags & IFF_MULTICAST) &&
(ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL)) {
struct in6_addr all_routers;
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