Problem with dual Ethernet network routing and gateways
Mark Jackson
mpfj-list at newflow.co.uk
Thu May 9 14:42:23 UTC 2013
I have a dual Ethernet AM335x board which I'm trying to set up, as follows:-
$ cat /etc/network/interfaces
auto lo eth0 eth1
iface lo inet loopback
iface eth1 inet static
address 10.0.101.1
netmask 255.255.0.0
gateway 10.0.0.1
iface eth0 inet static
address 10.1.101.1
netmask 255.255.0.0
$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:18:31:93:49:34
inet addr:10.1.101.1 Bcast:0.0.0.0 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:56
eth1 Link encap:Ethernet HWaddr 00:18:31:93:49:35
inet addr:10.0.101.1 Bcast:0.0.0.0 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2756 errors:0 dropped:0 overruns:0 frame:0
TX packets:607 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:465648 (454.7 KiB) TX bytes:168843 (164.8 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:50 errors:0 dropped:0 overruns:0 frame:0
TX packets:50 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4066 (3.9 KiB) TX bytes:4066 (3.9 KiB)
But my routing table is:-
$ route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default 10.1.0.1 0.0.0.0 UG 0 0 0 eth0
10.0.0.0 * 255.255.0.0 U 0 0 0 eth1
10.1.0.0 * 255.255.0.0 U 0 0 0 eth0
As you can see the gateway for eth1 has not been added to the routing table.
I'm using avahi and udhcpc, and I have done nothing special with the network
config.
So with only eth1 connected, I am unable to ping anything outside my local
network.
Can anyone tell me how to get the correct routing added automatically ?
Cheers
Mark J.
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