Re: [SLUG] Combining 2 ISP's w/o BGP?

From: billt (billt@ifelse.org)
Date: Sat Jun 23 2001 - 22:53:50 EDT


On Sat, Jun 23, 2001 at 09:28:51PM -0400, Douglas Koobs wrote:
> But here is what I get:
>
> [root@ns1 /root]# ip link list
> Cannot open netlink socket: Address family not supported by
> protocol

Check to see if your kernel is compiled with netlink support,
along with a couple of other options. IIRC, most (if not all)
are found under the

        Networking Options -->

part of the kernel config (seems reasonable!).

Here is an excerpt from a working config from 2.4.4

# CONFIG_IP_ROUTE_LARGE_TABLES is not set
# CONFIG_NET_FASTROUTE is not set
# CONFIG_WAN_ROUTER is not set
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_NF_IPTABLES=y
CONFIG_IP_ROUTE_FWMARK=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_NAT=y
CONFIG_IP_ROUTE_TOS=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_NETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_NET_CLS_ROUTE4=m
CONFIG_NET_CLS_ROUTE=y
CONFIG_RTNETLINK=y

This machine doesn't combine uplinks, but it does NAT certain
machines through different gateways depending on filewall mark.

HTH



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