@BluesKaj, its 5 years later and the issue seems to still exist and is annoying as hell. This stale thread is my best lead towards a resolution so far. 

Can you link any code repos? Are the licenses compatible? Anything done so far?

IMO now it's even worse because printing directly from a phone/tablet is also a thing.

I also think that flashing openwrt only to have intra network DNS and a working printer is almost not worth the configuration time :(.

I'd love to have this work out of the box along with most other features of router sotfware. 

Also looking for the source!!