@Jgaucin I reflashed the system image for an unrelated reason and now the drone autoconnects to QGC with these settings in voxl-mavlink-server.conf file in /etc/modalai.
"x.x.x.x" is the IP of the host PC running QGC.
{
"primary_static_gcs_ip": "192.168.8.10",
"secondary_static_gcs_ip": "x.x.x.x",
"onboard_port_to_autopilot": 14556,
"onboard_port_from_autopilot": 14557,
"gcs_port_to_autopilot": 14558,
"gcs_port_from_autopilot": 14559,
"en_external_uart_ap": false,
"autopilot_uart_bus": 1,
"autopilot_uart_baudrate": 921600,
"en_external_ap_timesync": 1,
"en_external_ap_heartbeat": 1,
"udp_mtu": 512,
"gcs_timeout_s": 4.5
}