Re: eth1 and eth2 Breaks Default Route

["Dusty Hall" <halljer () auburn edu>]

John,

  Here's all I have in our eth1 startup file...

cat /etc/sysconfig/network-scripts/ifcfg-eth1

DEVICE=eth1
ONBOOT=yes
PROMISC=yes

Later,


-Dusty


> > > John Crain <port123tcp () yahoo com> 7/22/2003 2:57:20 PM >>>
There was a typo in the original message.  The
correction follows:

A buddy of mine asked the following question on
comp.os.linux.networking, but those folks don't fully
understand why an interface would want to be set to
0.0.0.0/0. If anyone can shed some light on a fix, I'd
like to know. Here's the original question:
 
I have Red Hat 9 on an X86 with three (3) interfaces
working as an IDS.  eth0 is my management interface
with a live IP address.  eth1 and eth2 both have their
IP addresses set to 0.0.0.0/0 for data collection. 
All IP addresses are set in
/etc/sysconfig/network-scripts/ifcfg-eth?.
 
When the box boots up my default route is shot through
eth2 (should be eth0) even though I have my GATEWAY
keyword set to the gateway I want. The following are
my ifcfg-eth? entries:
 
/etc/sysconfig/network-scripts/ifcfg-eth0
     DEVICE=eth0
     onfiltered=yes
     BOOTPROTO=static
     IPADDR=1.2.3.4
     NETMASK=255.255.255.0
     GATEWAY=1.2.3.1
 
/etc/sysconfig/network-scripts/ifcfg-eth1
     DEVICE=eth1
     BOOTPROTO=static
     BROADCAST=255.255.255.255
     IPADDR=0.0.0.0
     NETMASK=0.0.0.0
     NETWORK=0.0.0.0
     onfiltered=yes
     GATEWAY=1.2.3.1
 
/etc/sysconfig/network-scripts/ifcfg-eth2
     DEVICE=eth2
     BOOTPROTO=static
     BROADCAST=255.255.255.255
     IPADDR=0.0.0.0
     NETMASK=0.0.0.0
     NETWORK=0.0.0.0
     onfiltered=yes
     GATEWAY=1.2.3.1
 
I added "GATEWAY=1.2.3.1" to ifcfg-eth1 and ifcfg-eth2
to see if that would fix things.  It doesn't...
 
Q1: How do I get the system to recognize the proper
gateway as specified in ifcfg-eth0?
Q2: Is there a way to tell an interface to boot in
promiscous mode?  I'm thinking there is a keyword that
can be placed in ifcfg-eth?, but I can't find any
reference to that...

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