After switching from cellular to wifi without ipv6, ForeachInterface still sees rmnet prefixes, so HaveV6 stays true, and magicsock keeps attempting ipv6 connections that either route through cellular or time out for users on wifi without ipv6
This:
-Adds SetAndroidBindToNetworkFunc, a callback to bind the socket to the selected Android Network object
Updates tailscale/tailscale#6152
Signed-off-by: kari-ts <kari@tailscale.com>
4c7c1091ba