[WiFi] [2/36] Waiting for IP address assignment.
[WiFi] IP address is xx.xx.xx.xx, starting hub (if enabled) and uplink
[mDNS] Initializing mDNS system
[mDNS] Setting mDNS hostname to "esp32olcbhub_5020103ffff"
[httpd] Starting HTTP listener on port 80
[Hub] Starting TCP/IP listener on port 12021
Listening on port 80, fd 48
Listening on port 12021, fd 49
[mDNS] Advertising _http._tcp:80.
[Hub] Shutting down TCP/IP listener
[mDNS] Advertising _openlcb-can._tcp:12021.
Shutdown listening socket 12021.
[mDNS] Removing advertisement of _openlcb-can._tcp.
[Hub] Starting TCP/IP listener on port 12021
Listening on port 12021, fd 49
[mDNS] Failed to advertise _openlcb-can._tcp:12021 due to: ESP_ERR_INVALID_ARG (258)