I cannot unblock certain websites that were previously blocked from /etc/hosts.
Here is what the file looks like:
0.0.0.0 facebook.com :: facebook.com 0.0.0.0 youtube.com :: youtube.com
When I remove the youtube entries, I can visit youtube. However, when I remove the facebook entries, facebook is still blocked.
I am on Mac OSx Sierra and have ran
sudo killall -HUP mDNSResponder and
sudo killall -HUP mDNSResponder;sudo killall mDNSResponderHelper;sudo dscacheutil -flushcache in attempt to flush the DNS cache to no avail.