Add support for routes with interfaces

[baldoarturo]

Hope to close #54
I allowed for arbitrary interface names.. Would it be better to allow for interface actually related to the device itself?
Dont know if this would be a chaos based on the fact we allow multiple devices per route

[DanSheps]

You have added changes not related to this PR. Please correct

[DanSheps]

Still showing the changes.

You might consider taking a patch, going back to main, creating a new clean branch, then applying the patch to that branch, then simply cleanup by removing the tag stuff.