127.0.0.1 localhost

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

10.0.0.161    cn-jenkins-deploy-platform-ansible-os-6419-1
node_10_0_0_161 cn-jenkins-deploy-platform-ansible-os-6419-1. cn-jenkins-deploy-platform-ansible-os-6419-1
10.20.0.17 cn-jenkins-deploy-platform-ansible-os-6419-1-test