eCos on Qemu

Enabling some tracing output regarding DHCP, BOOTP and in general networking showed that no DHCP requests where being answered by the internal Qemu DHCP server. So, I disabled DHCP for now, and switched to a hardcoded network configuration. This seems to work, the network card gets nicely configured. My ORB runs and binds to the specified interface. But... through the slirp networking code, it doesn't seem to work. Switching to TUN/TAP hasn't given any positive results either.