I've setup a gateway/router for a small internal network that we are
using to disinfect virus ridden windows machines. eth0 serves the ip's
to the internal network (192.168.1.1) and eth1 is connected to the
internet (130.111.68.110).
This works very well, except when I start the machine with the eth0
network cable unplugged and then plug it back in after the machine has
started. When this happens, people are still able to get an ip but are
not able to get out on the internet. If I go on the server and try to
ping something, it doesn't work, it's trying to use eth0 to ping and
is getting a host unreachable. A restart with the cable plugged in
seems to fix it.
I'm thinking this has to do with setting routes. Though I'm not sure
what routes are appropriate to set. Should eth0's route be
130.111.68.1? Does this sound like a route problem?
Here is the output of the routes command:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
130.111.68.0 * 255.255.254.0 U 0 0 0 eth1
169.254.0.0 * 255.255.0.0 U 0 0 0 eth1
Here are the contents from my ifcfg-ethx scripts:
#eth0:
# Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.1.1
NETMASK=255.255.255.0
GATEWAY=192.168.1.254
HWADDR=00:30:BD:05:65:DF
#eth1
DEVICE=eth1
BOOTPROTO=static
IPADDR=130.111.68.110
NETMASK=255.255.254.0
GATEWAY=130.111.68.1
HWADDR=00:C0:A8:F1:EF:39
ONBOOT=yes
TYPE=Ethernet
and here is my ifconfig:
eth0 Link encap:Ethernet HWaddr 00:30:BD:05:65:DF
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::230:bdff:fe05:65df/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:259 errors:0 dropped:0 overruns:0 frame:0
TX packets:353 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:28915 (28.2 KiB) TX bytes:222329 (217.1 KiB)
Interrupt:11 Base address:0xc400
eth1 Link encap:Ethernet HWaddr 00:C0:A8:F1:EF:39
inet addr:130.111.68.110 Bcast:130.111.69.255 Mask:255.255.254.0
inet6 addr: fe80::2c0:a8ff:fef1:ef39/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:238459 errors:0 dropped:0 overruns:0 frame:0
TX packets:2361 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:19817771 (18.8 MiB) TX bytes:234701 (229.2 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:27 errors:0 dropped:0 overruns:0 frame:0
TX packets:27 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:12146 (11.8 KiB) TX bytes:12146 (11.8 KiB)
Thanks for anyone giving me some hints.
Romeo
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