On Wed, 30 Jun 1999, Samuli Kaski wrote:
[ Replying to myself since I was able to solve the problem and I
received no replys so maybe this will help someone ]
> ISP1-NICIP * 255.255.255.255 UH 0 0 0 eth1
> ISP2-NICIP * 255.255.255.255 UH 0 0 0 eth0
> ISP2-NET * 255.255.255.248 U 0 0 0 eth0
> ISP1-NET * 255.255.255.0 U 0 0 0 eth1
> 127.0.0.0 * 255.0.0.0 U 0 0 0 lo
> default ISP1-GWIP 0.0.0.0 UG 0 0 0 eth1
>
> In this configuration incoming connections for ISP1-NICIP work but for
> ISP2-NICIP the return packets get routed through ISP1-GWIP (which is
> obviously incorrect).
I was able to solve my routing problems with Alexey's iproute2 package
and the appropriate kernel (2.2.10) options. The kernel options follow
#
# Networking options
#
CONFIG_NETLINK=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_TOS=y
CONFIG_IP_ROUTE_VERBOSE=y
#
# QoS and/or fair queueing
#
CONFIG_NET_SCHED=y
CONFIG_NETLINK=y
CONFIG_RTNETLINK=y
And the commands given to the ip-tool (I removed the default gateway
from Red Hat's /etc/sysconfig/network)
/sbin/ip rule add from ISP1-NET/29 table 1
/sbin/ip rule add from ISP2-NET/24 table 2
/sbin/ip route add 0/0 via ISP1-GWIP table 1
/sbin/ip route add 0/0 via ISP2-GWIP table 2
/sbin/ip route add 0/0 via ISP2-GWIP
Hope this helps someone,
Samuli
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