Re: howto isolate 2 nics?

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Gene Heskett wrote:
> I got this back, but I'll sanitze the outside addresses to protect the 
> guilty. :-)
> 
> ----------  Forwarded Message  ----------
> 
> Subject: Re: Fwd: Re: howto isolate 2 nics?
> Date: Friday 22 September 2006 13:20
> From: Jim Hines <jhines@xxxxxxxx>
> To: Gene Heskett <gene.heskett@xxxxxxxxxxx>
> 
>> Please post the results of route -n and ifconfig -a.  It sounds like you
>> may have a default route issue.
>>
>> Bob...
> 
> route -n
> Kernel IP routing table
> Destination  Gateway      Genmask      Flags Metric Ref    Use Iface
> 66.xx.xx.xx  0.0.0.0      255.255.255.240 U     0      0        0 eth0
> 192.168.1.0  0.0.0.0      255.255.255.0   U     0      0        0 eth1
> 169.254.0.0  0.0.0.0      255.255.0.0     U     0      0        0 eth1
> 127.0.0.0    0.0.0.0      255.0.0.0       U     0      0        0 lo
> 0.0.0.0      192.168.1.12 0.0.0.0         UG    0      0        0 eth1
> 
> 
> 
> ifconfig -a
> 
> eth0      Link encap:Ethernet  HWaddr 00:A0:CC:5F:7C:6B
>            inet addr:66.xx.xx.xx  Bcast:66.xx.xx.xx 
>  Mask:255.255.255.240 UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>            RX packets:16990702 errors:1 dropped:0 overruns:0 frame:0
>            TX packets:8227520 errors:3 dropped:0 overruns:0 carrier:3
>            collisions:0 txqueuelen:100
>            RX bytes:3080066568 (2937.3 Mb)  TX bytes:1206913340 (1151.0
>  Mb) Interrupt:5 Base address:0x9000
> 
> eth1      Link encap:Ethernet  HWaddr 00:50:DA:B4:0E:93
>            inet addr:192.168.1.3  Bcast:192.168.1.255  Mask:255.255.255.0
>            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>            RX packets:62903099 errors:1 dropped:0 overruns:0 frame:1
>            TX packets:58704388 errors:0 dropped:0 overruns:0 carrier:0
>            collisions:0 txqueuelen:100
>            RX bytes:1244767257 (1187.1 Mb)  TX bytes:3080714873 (2937.9
>  Mb) Interrupt:12 Base address:0xd800
> 
> 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:2274417 errors:0 dropped:0 overruns:0 frame:0
>            TX packets:2274417 errors:0 dropped:0 overruns:0 carrier:0
>            collisions:0 txqueuelen:0
>            RX bytes:450462974 (429.5 Mb)  TX bytes:450462974 (429.5 Mb)
> 
The default route is through eth1 with a gateway of 192.168.1.12. It
should be through eth0 with what ever gateway address is provided by
the ISP. This is why traffic for the Internet, that should g out
eth0, is going out eth1. It looks like the default route was set the
way it was in order to get to the 169.254.0.0 network through
192.168.1.12 instead of providing a proper route to that network. If
this is the case, then what is needed instead is a route specificity
for 169.254.0.0 using 192.168.1.12 as the gateway.

Mikkel
-- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

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