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e272ad915b
Run Cisco CML containerized IOL images (e.g. iol-xe/iol-xe:17-18-02, driven by virl.lab/cmd/iol-runner) as GNS3 Docker router nodes: - VendorDockerVM: generic GNS3_UNIX_SOCKET_NIO/GNS3_UNIX_SOCKET_DIR knobs wiring adapters through AF_UNIX datagram socket pairs (add_nio_unix cNN.sock sNN.sock) instead of TAP + move_to_ns; node creation fails if the socket dir is not a persisted volume. - IOLDockerVM (GNS3_IOL_RUNNER=1): forces skip-init + unix-socket NIO + /config,/tmp volumes, writes iol-config.json on every start (num-eth tracks adapters, runner drops to the server uid/gid so the sockets are reachable), pre-creates tmp/run, cleans stale sockets after unclean kills, and makes reload a graceful stop + full start (NVRAM flush + rewiring). Console stays telnet on PID 1 stdio. - Manager selects the node class from console_type or GNS3_* environment markers (create-time, like console_type). - Image-free tests (25) and feature documentation.