[Bridge] Packets go through the bridge one-way only

Saxer, John -ACDSD John.Saxer at itt.com
Mon Jul 12 09:34:26 PDT 2004

Hello all,

I am new to this list, and to bridging, and am having a problem. Perhaps I just don't understand something, am setting it up incorrectly, or just plain missed something, but I could use some help.

I am using 2 Redhat 7.3 systems to work out the configuration issues for a bridge, before transferring all my accumulated knowledge to an embedded system. One of the systems has only a wireless card, while the other has a wireless card and a wired interface. The plan is to use the 2nd machine to allow the first to access the wired world.

I followed the directions in setting up a bridge on the 2nd machine, bridging the wireless card and the wired interface. However, even something as simple as ping on the first card does not work. I run TCPDUMP on the 2nd machine, and it reports the "apr-whohas" packets arriving, but either they then don't go out, or the responses get lost, or something.

I can ping the 2nd machine from the first, using the bridge IP address, just fine. Even telnet works. But only addressing the 2nd machine - everything else is a black hole.

Any ideas? What did I do wrong?


John Saxer
ITT Industries, San Diego

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