How to flush local dns cache
10.7 – 10.8
sudo killall -HUP mDNSResponder
10.5 – 10.6
sudo dscacheutil -flushcache
10.4
lookupd -flushcache
10.7 – 10.8
sudo killall -HUP mDNSResponder
10.5 – 10.6
sudo dscacheutil -flushcache
10.4
lookupd -flushcache