Hello,
My adsl connection being slow, I bought a usb 4G key and each ip is provided by dhcp.
To be able to register both default gateways and use them in a next step, I wrote /etc/rc.conf.d/networking like so:
ifconfig_igb0="DHCP fib 0"
ifconfig_ue0="SYNCDHCP fib 1"
But setfib 1 netstat -rn...