Sure it does. We can just move to ipv8, 5 octlets instead of 4. We can give 2.x.x.x.x to 10. to earth, maybe 100 to 110 for moon, mars, etc.

1.x.x.x.x will be for legacy stuff. If anything is trying to route to only 4 octlets, routers add a 1. in front of it. Bam, legacy solved.

edit: I realised people don't see the big picture here.

Step 1) We collectively engineer and deploy ipv8, along with RFCs explaining how future expansion works

2) We put all sorts of preparatory work, conversation into the eventual expansion into 6 octlets, from 5. We'll need that once we colonize multiple systems.

3) The RFC will state that "new planetary systems get space on 5th oclet, 1.200.x.x.x.x to 1.250.x.x.x.x.

4) As systems grow to need more than an ipv4 range, we transition them to their own 6th oclet. It's easy for them, because they can retain legacy 5th octlet headers.

5) We then collectively freeze our brains, so that in the future, once interplanetary, faster than light communication exists, we are thawed to deal with the 5 to 6 oclet transition!

And we all become immortal.

But no, that's fine, think small, stay non-immortal with your ipv6 Flanders!