On my Mac (running OS 10.6.8), I can edit my hosts file with
sudo vi /etc/hosts, but changes I make don't seem to persist through restarts or possibly awaking from sleep mode.
Is there a way to make these changes persist?
Here's a sample change adding an override for www.example.com:
$ cat /etc/hosts ## # Host Database # # localhost is used to configure the loopback interface # when the system is booting. Do not change this entry. ## 127.0.0.1 localhost 255.255.255.255 broadcasthost ::1 localhost fe80::1%lo0 localhost 220.127.116.11 www.example.com
Update: I am also using Cisco AnyConnect VPN software, and that turned out to be the clue. See Daniel's answer below.
Update 2013-05-20: This behavior was fixed/changed by Cisco in AnyConnect v3.0.5080 (or higher), released in Spring 2013. Release Notes - search for