router: make room for multiple underlay impls phase 1#4658

Merged

jiceatscion merged 15 commits intoscionproto:masterfrom jiceatscion:router_multi_io_3

Feb 4, 2025

+881-384

Commits on Nov 29, 2024

Just a checkpoint. All of this still WIP.
jiceatscion
committed

Commits on Jan 16, 2025

Merge branch 'scionproto:master' into router_multi_io_3
jiceatscion
authored

Commits on Jan 27, 2025

Commits on Jan 30, 2025

Commits on Jan 31, 2025

Commits on Feb 3, 2025