There is a problem with resolving DNS in my OS X Yosemite.
Safari doesn't load web sites, ping says "unknown host" to google.com. DNS servers set to 18.104.22.168 and 22.214.171.124.
Gets proper information about google.com domain and others. nslookup also works properly.
I cannot reboot because I've got another user logged in and his data will be lost.
Restarting discoveryd doesn't seem to help. TCP dump shows no UDP activity when Safari or ping trying to resolve.