I used the ip utility to do some routing on my 4 nic router/firewall. I was using version ip utility, iproute2-ss010824, which is the same as Gentoo uses. I was using it on a Slackware 8 box but I had some trouble with multipath routing using nexthop. After some time (5-15 minutes or so) the relevant output of ip route show was : default nexthop via 213.51.x.1 dev eth3 weight 1 nexthop via 212.204.x.1 dev eth1 weight 1 nexthop via 212.204.x.1 dev eth2 weight 1 dead The dead via wasn't dead at all, it's a bug somewhere and it was resolved in a later release of iproute2. I use ip utility, iproute2-ss020116 and didn't see this dead error any more. Maybe Gentoo should update the iproute2 version as well, but I don't know if the Gentoo version was patched to resolve this problem. This a posting on LARCT on this subject containing a patch as well. Didn't test it . http://mailman.ds9a.nl/pipermail/lartc/2001q4/002127.html
Fixed in iproute-2.4.7-r1.ebuild on CVS. If you like, submit another ebuild to request a new version of iproute. It was quicker to fix the bug in the current version rather than upgrade to a new version, but we should upgrade too at some point. Please test this patched version to ensure it works.