The new argument `ping` allows users to specify a comma-seperated list
of hosts (IP or hostname) to ping in order to verify connectivity.
Ping is considered successful as soon as the peer is reachable either
directly or via DERP.
Updates tailscale/corp#32817
Signed-off-by: Percy Wegmann <percy@tailscale.com>
The tailscale repo does not get tagged for unstable builds, so the best we can do when
building macOS from source is to build from the HEAD of `main`.
Updates tailscale/corp#32813
Signed-off-by: Percy Wegmann <percy@tailscale.com>
