Problem implementing split access

Linux Advanced Routing and Traffic Control

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Hello,

I am attempting to implement load balancing on a firewall to allow me to use
two ISPs. I have followed the instructions in section 4.2 of the LARTC HOWTO
but have got stuck on the split access section

I have the options CONFIG_IP_ADVANCED_ROUTER and CONFIG_IP_MULTIPLE_TABLES
in my kernel (2.4.24) and have added routes to the /etc/iproute2/rt_tables
file but when I try a command in the form of:

    ip route add $P1_NET dev $IF1 src $IP1 table T1

such as:

    ip route add 192.168.10.0/24 dev eth0 src 192.168.10.250 table myisp

I get the error:

    RTNETLINK answers: Invalid argument

This sounds like I have missed something that  I need in the kernel but
everything that was listed in the HOWTO has been included in my kernel. If I
try the command without the src argument such as:

    ip route add 192.168.10.0/24 dev eth0 table myisp

..then I get no errors which would seem to sugest that the src argument is
the problem here.

Any insight someone might have would be most apreciated!

Thanks,
Andy

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