On Fri, 9 May 2003, Beat Bolli wrote: > Recently I was testing a 6to4 setup involving a gateway and a > laptop behind the gateway. I installed radvd on the gateway and > configured it to announce the tunnel running over eth1 on > interface eth0. > > On the laptop, I just modprobed ipv6 and watched ifconfig's output > to see it it automatically got a scope:global address. As it didn't > get one after a minute or so, I started tcpdump in a second terminal > to check if radvd was in fact advertising the tunnel. Well, big was > my surprise when right after the next advertisement the global address > appeared, and it was even bigger when it disappeared again 5 minutes > after I had terminated tcpdump. Then I did another check with > > ifconfig eth0 promisc; sleep 60; ifconfig eth0 -promisc > > and the behaviour way exactly the same. It seems like the kernel can > see the router advertisements only if the interface is in promiscuous > mode. Is this by design, is it just not finished yet, or am I missing > something completely here? Would the tcpdump output be helpful? I've seen the same on a laptop: I think this is a driver bug. Which driver/card do you have? Have you tried using "allmulti" flag instead of promisc? That should help IIRC. -- Pekka Savola "You each name yourselves king, yet the Netcore Oy kingdom bleeds." Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
