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From: "Scott Renna" <srenna@vdbmusic.com>
To: <FreeBSD-questions@FreeBSD.ORG>
Date: Fri, 2 Jan 2004 22:56:17 -0500
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Subject: 2 3coms One with an IP and one with none
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Hello List,

I am having some difficulty in getting my xl0 and xl1 3com cards to work
the way I'd like.  I'm running 5.1 Release and I'm basically trying to
have one interface with no IP address(specifying it as such in
/etc/rc.conf as ifconfig_xl1="up")
And I'd like to have the other(xl0) to have an IP address of my Internal
Network.  The purpose of this setup is to sniff traffic with the
interface that has no IP address and allow for management and reporting
over the interface that has an IP associated with the Internal network.

For some reason, this is just not working for me at all.  I've tried to
configure via rc.conf and this fails to work.  I've also tried assigning
an RFC 1918 address to the interface I want sniffing as this traffic
should not be routable, but it doesn't seem to work. 

Can anyone make a suggestion?

Scott