u need to configure either TUN/TAP device or ethertap device on the actual host to attach the virtual ethernet with it.

for ethertap u need to do following on the host machine
mknod /dev/tap0 c 36 16
insmod ethertap

on UML running
./linux ubd0=root_fs eth0=ethertap,tap0,fe:fd:0:0:0:1,tap_device_ip_address.

hope it will help you.

On Sun, 26 Sep 2004 pacbrpt@bol.com.br wrote :
>Please, help !
>I have a big, big trouble.....
>The host server have the IP
>And the UML virtual server have the IP
>Well, I don't understand nothing about network, but I think that host ip
>and uml ip are not compatible, or something that......
>I'm always create UMLs in other servers (but with all the IPs in same
>class) and I never had problems before, but in this machine, when I will
>configure UML network, I never can't add the default route !
>UML # ifconfig eth0 netmask up
>UML # route add default gw
>SIOCADDRT: Network is unreachable
>UML #
>The host OS, the host kernel version, the uml filesystem and the kernel
>filesystem are the same that I use in other machines!
>Only in this machine that I have this problem....
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