Hi All,
I'm setting up multiple virtual interfaces to allow load-balancing over several uplinks using a single NIC, on Debian Squeeze. Packets will be marked by iptables, and sent to the proper routing tables via "ip rule add fwmark <n>".
I'm having trouble setting routes for the VLANs.
root@debiandesk2:/etc/network# ifconfig
192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::22cf:30ff:fed8:6bea/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:49654 errors:0 dropped:0 overruns:0 frame:0
TX packets:54712 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:35989170 (34.3 MiB) TX bytes:8795113 (8.3 MiB)
Interrupt:27 Base address:0xc000
eth1 Link encap:Ethernet HWaddr 00:08:54:dc:1b:79
inet addr:192.168.10.1 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::208:54ff:fedc:1b79/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:6077 errors:0 dropped:0 overruns:0 frame:0
TX packets:9451 errors:0 dropped:0 overruns:0 carrier:73
collisions:0 txqueuelen:1000
RX bytes:821439 (802.1 KiB) TX bytes:9756873 (9.3 MiB)
Interrupt:19 Base address:0xdc00
eth0.2 Link encap:Ethernet HWaddr 20:cf:30:d8:6b:ea
inet addr:192.168.200.10 Bcast:192.168.200.255 Mask:255.255.255.0
inet6 addr: fe80::22cf:30ff:fed8:6bea/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:17776 errors:0 dropped:0 overruns:0 frame:0
TX packets:15037 errors:0 dropped:1 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:16258598 (15.5 MiB) TX bytes:2075870 (1.9 MiB)
eth0.3 Link encap:Ethernet HWaddr 20:cf:30:d8:6b:ea
inet addr:192.168.2.10 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::22cf:30ff:fed8:6bea/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1083 errors:0 dropped:0 overruns:0 frame:0
TX packets:1320 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:113499 (110.8 KiB) TX bytes:273602 (267.1 KiB)
My firewall/load-balancing script is able to set the routes for the first virtual interface (eth0.2) OK:
+ ip route flush table T0
+ ip route add 192.168.200.0/24 dev eth0.2 src 192.168.200.10 table T0
+ ip rule add from 192.168.200.10 table T0
+ ip rule add iif lo to 201.200.105.6 table T0
+ ip route add 192.168.10.0/24 dev eth1 table T0
+ ip route add 127.0.0.0/8 dev lo table T0
+ ip rule del from all fwmark 0
+ ip rule add fwmark 0 table T0
+ ip route add 192.168.200.0/24 dev eth0.2 src 192.168.200.10
+ ip route add default via 192.168.200.1 table T0
However, it fails as follows when adding the default route for the second virtual interface (eth0.3):
+ ip route flush table T1
+ ip route add 192.168.2.0/24 dev eth0.3 src 192.168.2.10 table T1
+ ip rule add from 192.168.2.10 table T1
+ ip rule add iif lo to 8.8.4.4 table T1
+ ip route add 192.168.10.0/24 dev eth1 table T1
+ ip route add 127.0.0.0/8 dev lo table T1
+ ip rule del from all fwmark 1
+ ip rule add fwmark 1 table T1
+ ip route add 192.168.2.0/24 dev eth0.3 src 192.168.2.10
+ ip route add default via 192.168.2.1 table T1
RTNETLINK answers: No such process
Similarly, I was unable to use "ip" to set a "nexthop via" default route for virtual interfaces.
I'd greatly appreciate any help.
Regards,
Lloyd
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