Symptoms
CLI VPN client changes umask of /etc/hosts to 077. After disconnecting from VPN, the umask is not restored back to the original.
Impact
It breaks usability of /etc/resolv.conf for OS apps.
Conditions
CLI VPN client is used to establish VPN connection on Mac/Linux.
Workaround
An administrator can restore umask of /etc/hosts using system tools.
Fix Information
Now the Mac/Linux CLI VPN client preserves the original umask of /etc/hosts after disconnecting from VPN.
