Yeah, the heading up the infrastructure team at my last workplace had his email signature as his name followed by MSc PhD CEng MBCS CITP. Those are the sorts of people I learned from :P
Nonetheless, forwarding from multiple IPs should work just fine on the Draytek (I say should as in it not working is probably not intentional) but I know for sure they work fine on Openwrt.
If you were any nearer I'd offer to install an Openwrt system for you as an externalsubcontractor
