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Date:      Fri, 02 Aug 2002 10:41:05 -0400
From:      "Robin P. Blanchard" <Robin_Blanchard@georgiacenter.org>
To:        stable@freebsd.org
Subject:   strange networking
Message-ID:  <3D4A9A01.5020506@georgiacenter.org>

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I've been playing around with the FEC kld a recent 4.6 STABLE box. So 
far, so great. The module appropriately bonds interfaces, handles 
failover correctly. In /etc/rc.conf I've got:

network_interfaces="fxp0 fxp1 fec0 lo0"
ifconfig_fxp0="media 100baseTX mediaopt full-duplex"
ifconfig_fxp1="media 100baseTX mediaopt full-duplex"
ifconfig_fec0="inet 10.10.25.128 netmask 255.255.0.0"
defaultrouter="10.10.0.1"

and in /etc/start_if.fec0:
ngctl mkpeer fec dummy fec
ngctl msg fec0: add_iface '"fxp0"'
ngctl msg fec0: add_iface '"fxp1"'
ngctl msg fec0: set_mode_inet

the module is being loaded appropriately from /boot/loader.conf.

Now, during boot, I see the fec0 interface configured:
fec0: port fxp0 in bundle is up
fec0: port fxp1 in bundle is up

Once I get to the prompt, the interface is appropriately configured and 
it's routing table looks great. However, traffic isn't coming through. 
Well, kind of. The box gets a couple residual arp entries; but that's 
it. It can't ping it's default route. Almost like layer 2 is working but 
not layer 3. I've determined I can get the interface working correctly 
by putting it into promiscuous mode for a second (tcpdump -i fec0). As 
soon as I've done that, the kernel again reports:
fec0: port fxp0 in bundle is up
fec0: port fxp1 in bundle is up
After which network traffic flows as it should. ???

Ideas?


-- 
----------------------------------------
Robin P. Blanchard
Systems Design and Support
Georgia Center for Continuing Education
fon: 706.542.2404 <|> fax: 706.542.6546
----------------------------------------


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