alternate tables and ipv6

[Gabriel Paues <gabriel@sics.se>]

Hello!

I want to route IPv6 packages differenlty depending on what is in the flowlabel.
I've written a flowlabel match module which works flawlessly. I have done an
experiment with IPv4 and the TOS flag, where I routed IPv4 packages differently,
depending on what was in the TOS flag. I marked packages (fwmark) depending on
the TOS flag and set everything up like this:

iptables -A PREROUTING -i eth0 -t mangle -m tos --tos 0 -j MARK --set-mark 1
ip rule add fwmark 1 table host2.out
ip route add default via 192.168.2.3 dev eth2 table host2.out

where 192.168.2.3 is different from what is default gw in the main-table.

All is working fine in the IPv6 case except the last statement (slightly altered
for IPv6):

#ip -6 route add default via fec0::192.168.2.3 dev eth2 table host2.out
RTNETLINK answers: File exists

Is this approach incompatible with IPv6 in any way? Is there any problems with
using IPv6-addresses and the "table" object?

Sincerily,

Gabriel Paues