Ubuntu 18.04 Network Setting

sudo vim /etc/default/grub

#아래 내용 추가
GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0"

update-grub2

sudo vim /etc/network/interfaces

#아래 내용 추가
auto lo
iface lo inet loopback
#The primary network interface

#dhcp(자동)인경우
auto eth0
iface eth0 inet static

#static(고정)인경우
auto eth0
iface eth0 inet static
address 10.10.10.123
netmask 255.255.255.0
gateway 10.10.10.1
dns-nameservers 8.8.8.8

service networking restart

#재시작 실패시
ifdown eth0 && sudo ifup eth0