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KKRainbow
ca4f867e43
Share a named TUN across instances while keeping unnamed devices dedicated. Track member addresses, routes, and MTU, and reject overlapping destinations except the common Magic DNS host route. Dispatch packets between the physical TUN and member tunnels. Keep IPv4 and ordinary IPv6 source translation for mobile wrong-source traffic. Update platform configuration and runtime host integration, with unit and network namespace coverage for routing and lifecycle. Use smoltcp for packet parsing and checksum updates. Keep core CI matrix jobs independent. Reserve native inbound flows before source translations allocate their wire tuples. Keep active reservations under table pressure and leave forwarded subnet traffic outside the local flow table. Complete interface claim updates on the shared runtime and retain member registrations until the transaction commits. Keep address, route, and MTU cleanup ordered after cancelled callers, including device initialization. Project mobile VPN addresses, routes, and DNS from admitted native members. Prefer unchanged attached claims and report conflicting members individually. Apply each member's complete initial claims before opening the shared fd, so conflicts leave healthy members usable. Cover inbound IPv4/IPv6 collisions, cancellation during native changes and dispatcher acknowledgments, admission priority, and atomic mobile claim rejection with regression tests. Use scoped TestNetwork fixtures for shared TUN bridge setup and cleanup. Resolve public IPv6 namespace aliases through the lab's actual names so the new tests remain isolated under parallel upstream test runs.