ubuntu boot 중
Waiting up to 60 more seconds for network configuration
메세지 해결방법
/etc/init/rc-sysinit.conf
수정전 : start on (filesystem and static-network-up) or failsafe-boot
수정후 : start on (filesystem) or failsafe-boot
vi /etc/init/rc-sysinit.conf #start on (filesystem and static-network-up) or failsafe-boot start on (filesystem) or failsafe-boot