go run cmd/server/main.go

make server
cd build
./server

$ sysctl -p

$ ip addr add 192.168.1.1/24 dev {interface}
$ ip link set dev {interface} up
$ iptables -t nat -A POSTROUTING -j MASQUERADE

go run cmd/client/main.go

make client
cd build
./client

$ ip addr add 192.168.1.{2-254}/24 dev {interface}
$ ip link set dev {interface} up
$ ip route add default via 192.168.1.1 dev {interface}