I thought I had similar, we use Junos Pulse and it rewrites your /etc/hosts file. I think it takes a backup at some point and rebuilds the file from that when i

I thought I had similar, we use Junos Pulse and it rewrites your /etc/hosts file. I think it takes a backup at some point and rebuilds the file from that when it needs to. This means some local changes just disappear. Nothing sinister though afaik.