nat works with ppp but not eth0

From: roger (tnet_at_fujji.us)
Date: 01/30/04 

Date: Fri, 30 Jan 2004 05:16:41 GMT

Anyone know why the router function of my computer works when I am dialed
up using an external modem but when i switch to using a cable modem for the
internet access, the router function doesn't seem to work because the other
computers on the lan cannot access the internet. They can't even ping the
dns server numbers successfully.

I could give my setup but I don't know if that would help. Here is a look:

localhost:~/1scripts# ifconfig
eth0 Link encap:Ethernet HWaddr 00:48:54:39:D5:6E
          inet addr:xxx.xxx.xxx.xxx Bcast:255.255.255.255
Mask:255.255.248.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:31980 errors:332 dropped:0 overruns:0 frame:0
          TX packets:10176 errors:0 dropped:0 overruns:0 carrier:0
          collisions:811 txqueuelen:100
          RX bytes:5828111 (5.5 MiB) TX bytes:4067774 (3.8 MiB)
          Interrupt:11 Base address:0x8000

eth0:0 Link encap:Ethernet HWaddr 00:48:54:39:D5:6E
          inet addr:192.168.0.3 Bcast:192.168.0.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:11 Base address:0x8000

lo Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
          UP LOOPBACK RUNNING MTU:16436 Metric:1
          RX packets:476 errors:0 dropped:0 overruns:0 frame:0
          TX packets:476 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:438256 (427.9 KiB) TX bytes:438256 (427.9 KiB)

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