Comment 13 for bug 1828602

I believe the issue is how get_routable_address_map is taking into account that undefined spaces are routeable between each other. Which is completely against the definition of the undefined space.

If you could try this quick patch to confirm it fixes your issue. I have confirmed that it does solve the problem with the undefined space, but want to confirm it solves the overall issue for you.

http://paste.ubuntu.com/p/gB3rd6PjGb/