@Sebastian-Roth so. it was not a fog client pb. all is working fine now.
i had to reboot uc to restart vbox without dhcp. loading process work now perfectly.
i had corected some parameters in host config too (bad manual entries).
So no problems with multi-networkdevices on fog server. just user PB.
Patience, I’ve found, makes all the difference.
Report bugs, request features, or get the latest progress.