Tailscale's exit-node "route all traffic" mode captures Docker's
forwarded container traffic into its tunnel and drops it as an
unrecognized flow, causing every outbound request from inside a
container to hang until timeout. This installs a systemd timer that
keeps an ip rule in place routing Docker's bridge subnet around
Tailscale's catch-all route instead.
Co-Authored-By: Claude Code <noreply@anthropic.com>
