Dual NIC routing (?) problem

[The MadDaemon]

List,

I'm having a problem with a dual-homed host running 7.0-RELEASE with
regards to traffic on one of the interfaces that I'm hoping someone
knows something about.

The goal of this box is to run Nessus on bge0 only (which is plugged
into a trunk port on a switch), keeping fxp0 free as the admin
interface and for serving web pages on my LAN.

Here's ifconfig:

bge0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
        ether 00:19:b9:22:a8:22
        inet 0.0.0.0 netmask 0xffffff00 broadcast 0.0.0.255
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=b<RXCSUM,TXCSUM,VLAN_MTU>
        ether 00:02:b3:bb:59:17
        inet 10.20.10.24 netmask 0xffffff00 broadcast 172.20.10.255
        inet 10.20.10.28 netmask 0xffffffff broadcast 172.20.10.28
        inet 10.20.10.29 netmask 0xffffffff broadcast 172.20.10.29
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active

/etc/rc.conf section:

# Created: Mon Jun  9 09:32:52 2008
defaultrouter="10.20.10.254"
hostname="darkhorse.mydomain.local"
ifconfig_fxp0="inet 10.20.10.24  netmask 255.255.255.0"
ifconfig_fxp0_alias0="inet 10.20.10.28 netmask 255.255.255.255"
ifconfig_fxp0_alias1="inet 10.20.10.29 netmask 255.255.255.255"
ifconfig_bge0="inet 0.0.0.0 netmask 255.255.255.0"


I'm not sure what other changes need to be made or where, but when I
assign an IP/netmask to bge0, bring up the interface, and try to ping
the gateway (or anything else), I get 100% packet loss.  I've even
tried to assign a new default route, but I get an error stating
there's already a default route.

I know I'm completely missing something here, but I just can't figure
out *what*.

Any help would be most appreciated.


-MD
-- 
It said "use Linux 2.4 kernel or better" so I installed FreeBSD. Now
everything runs better. Why didn't they just tell me to do that to
begin with?