On Thursday 09 May 2013 17:09, Mark Jackson wrote: > On 09/05/13 15:42, Mark Jackson wrote: > > 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 > > If I add:- > > $ route add default gw 10.0.0.1 > > ... I get a gateway on eth1 and my routing table becomes:- > > $ route > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use Iface > default 10.0.0.1 0.0.0.0 UG 0 0 0 eth1 > 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 > > ... and then I *can* ping out on eth1. > > So for a *dual* Ethernet system, how do I get both default gateway entries > using > ifup / ifdown / etc ?
ifup / ifdown is way too stupid to handle dynamically changing networks. My rant about it: http://busybox.net/~vda/no_ifup.txt The examples (adapted from my home machine): busybox/examples/var_service/. They handle dynamic unplugging of ethernet cables: ifplugd_if/ monitors cables and ups/downs dhcp_if/; which in turn triggers re-runs of fw/, the "network reconfiguration script". Ask here if the examples aren't easy to follow. -- vda _______________________________________________ busybox mailing list [email protected] http://lists.busybox.net/mailman/listinfo/busybox
