pfexec vi /etc/nsswitch.conf
host: files dns 확인
pfexec vi /etc/resolv.conf
nameserver 123.123.123.123
pfexec vi /etc/nwam/llp
lancard_name static 123.123.123.123
netstat -nr
pfexec route add default 123.123.123.1
pfexec route delete default old_gateway
netstat -nr
pfexec ifconfig lancard_name 12.123.123.123 up