2 ethernet cards problem....

morelli · n00b Joined: 22 Apr 2002 Posts: 7 Location: ITALY

Dear all,

a stupid things. I have a Gentoo box with 2 ethernet cards.
I enter in /etc/conf.d/net:
iface_eth0="150.217.141.10 broadcast 150.217.141.255 netmask 255.255.255.0"
iface_eth1="192.168.10.88 broadcast 192.168.10.255 netmask 255.255.255.0"
.
.
.
gateway="eth0/150.217.141.1"

The eth0 works fine, but when I add:

gateway="eth1/192.168.10.88"

and restart net.eth1, the network goes down and no ethernet works.

How can I set all things to set the correct routes?
Thanks
Enrico
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Enrico Morelli ;-)

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Chris W · Posted: Fri Aug 02, 2002 9:08 am Post subject:

A cursory inspection of the /etc/init.d/net.ethn code indicates that it is only capable of handling a single default route. This will be set up on the interface specified in the gateway variable - there is only one variable, so whichever is set last in /etc/conf.d/net wins. In your case, you probably have the eth1 default route and not the eth0. Look at

morelli · n00b Joined: 22 Apr 2002 Posts: 7 Location: ITALY

Thanks for your response,

I'll try.

;-)

)

Enrico
_________________
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Enrico Morelli ;-)

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nitro322 · Guru Joined: 24 Jul 2002 Posts: 594 Location: USA

I may be missing something here, but why are you setting up two default routes? The purpose of a default route is to catch all packets not already being sent through a known route (such as the machines subnet) and redirect them to a known and (usually) public gateway. If the cards have addresses on different subnets, then it'd make sense to have multiple routing table entries for that, but I'm not understanding how two default routes could benefit you.

Lemma · Posted: Sun Jan 12, 2003 10:53 am Post subject:

Sven Vermeulen · Posted: Mon Jan 13, 2003 5:24 pm Post subject:

Try adding a test to the net.ethX initscript to have it check if it is on the home- or work network (f.i. ping the gateway). Depending on that information, it will set the home-gateway or the work-gateway. Do this after the initialization of the network cards (ifconfig's) but before the setting of the default gateway).

This assumes that the IPs of eth0 and eth1 are in the same subnet as the gateways and that the appropriate subnet masks are given. If not, pinging will always result in failure since there is no default gateway setup yet.