Hello, On Tue, 4 Dec 2001, Whit Blauvelt wrote: > Hi, > > With a 2.2.20 kernel (and 2.2.19) and iproute2-ss991023, I'm having trouble > with nexthop syntax - or, I think the syntax is right according to examples, > but it's not working for me. For instance: > > ~# ip ro add default nexthop via 65.xx.yy.97 dev eth2 nexthop via 66.zz.ww.207 dev eth1 > RTNETLINK answers: Invalid argument Can you try to fix iproute2/ip/iproute.c:parse_nexthops() with change like this: --- iproute2/ip/iproute.c.orig Mon Aug 6 03:31:52 2001 +++ iproute2/ip/iproute.c Thu Dec 20 13:14:06 2001 @@ -620,6 +620,8 @@ } rtnh->rtnh_len = sizeof(*rtnh); rtnh->rtnh_ifindex = 0; + rtnh->rtnh_flags = 0; + rtnh->rtnh_hops = 0; rta->rta_len += rtnh->rtnh_len; parse_one_nh(rta, rtnh, &argc, &argv); rtnh = RTNH_NEXT(rtnh); This is for iproute2-2.4.7-now-ss010824.tar.gz. If you are using different version then make sure the fix resets all fields: rtnh_ifindex, rtnh_flags and rtnh_hops. Your problem is probably unexpected bits set in the rtnh_flags and refused from the kernel (probably fib_semantics.c:fib_check_nh or another place) Regards -- Julian Anastasov <ja@xxxxxx>