Ok, this is probably a "non starter", but why not ask.
I have a /26-subnet assigned at a colocation provider where i run a handful och Machines.
Now i have moved one of those Machines to my home for maintenance.
I wonder if it would be possible to set up a subnet locally but only route SOME of the available addresses there (those pertaining to that specific machine) while pushing the rest out the normal internet pipe.
Right now i just add a second IP to my own computer and that works, but naturally i can then not access any services on the rest of the Machines until i remove that extra IP.