echo "" > /etc/hostname

hostname 

cat > /etc/hosts << EOF
127.0.0.1   snapshot-ipv4-dhcp-el7  localhost localhost.localdomain
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
EOF
