sudo sed -i.bak \
-e '/Port 22/ a Port 22'\
-e '/PermitRootLogin/ a PermitRootLogin yes'\
-e '/ClientAliveInterval/ a ClientAliveInterval 10'\
-e '/ClientAliveCountMax/ a ClientAliveCountMax 999'\
/etc/ssh/sshd_config
service sshd restart && ip addr show eth0 | grep eth0