Seu arquivo / etc / hosts deve ser lido
127.0.0.1 localhost
127.0.1.1 serverubuntu//change this to 127.0.0.1
192.168.1.199 serverubuntu//add your static IP
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters