Dual NIC routing (?) problem

[Yuri Pankov]

The MadDaemon wrote:
> 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"

Try using ifconfig_bge0="up" in /etc/rc.conf instead of assigning bogus 
(probably) address.

> 
> 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


HTH,
Yuri