Re: Two interfaces
- From: Pascal Hambourg <boite-a-spam@xxxxxxxxxxxxxxx>
- Date: Mon, 27 Oct 2008 13:01:38 +0100
Hello,
Jozza a écrit :
I have two interfaces eth0 and eth1. The default interface is eth1. I am having problems routing the voice traffic to eth0
eth0 10.58.16.28 gw: 10.58.0.1 mask:255.255.0.0.
eth1 192.168.1.110 gw:192.168.1.254: mask 255.255.255.0
I want all outgoing traffic designated to 10.xx.xx.xx to go out through eth0 and also to go through gw 10.58.0.1 when the destination is not in the mask of eth0's mask, otherwise not.
What i've done so far is:
$iptables -t mangle -A OUTPUT -d 10.0.0.0/8 -j MARK --set-mark 2 #mark outgoing traffic for 10....with 2
$iptables -t nat -A POSTROUTING -m mark --mark 2 -j SNAT --to 10.58.16.28 #change source address with mark 2 to 10....
$iproute rule add fwmark 2 table tm1 # send all traffic with mark 2 to table tm1
$iproute route add default via 10.58.0.1 dev eth0 table tm1 #use eth0 and this default gateway in table tm1
Just being curious... Why didn't you just add a route to 10.0.0.0/8 via 10.58.0.1 in the main routing table, instead of using advanced routing and NAT ?
But i see a lot of these in tcpdump on eth0
arp who-has 10.58.0.1 tell 10.58.16.28
arp reply 10.58.0.1 is-at xx:xx:xx:xx:xx:xx
What's wrong with it ?
All addresses 192..., 10.58...., 10.22... are pingable
Really, even addresses in 10.58.0.0/16 ? IMHO your advanced routing does not meet your requirement : "I want all outgoing traffic designated to 10.xx.xx.xx to go out through eth0 and also to go through gw 10.58.0.1 when the destination is not in the mask of eth0's mask, otherwise not". With the above rules, all 10.0.0.0/8 should be routed via 10.58.0.1, including 10.58.0.0/16.
.
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