Dec  2 05:38:37 sdsworkstation ifup-route: Warning: Could not set up default route via interface
Dec  2 05:38:37 sdsworkstation ifup-route: Command ip route replace to default via 192.168.0.100 returned:
Dec  2 05:38:37 sdsworkstation ifup-route: . RTNETLINK answers: Network is unreachable
Dec  2 05:38:37 sdsworkstation ifup-route: Configuration line: default 192.168.0.100 - -
Dec  2 05:38:37 sdsworkstation ifup-route: This needs NOT to be AN ERROR if you set up multiple interfaces.
Dec  2 05:38:37 sdsworkstation ifup-route: See man 5 routes how to avoid this warning.