It's been all right until a few days ago when I made a search from google.com and it ended up at this address:https://ipv6.google.com/sorry/IndexRedirect?continue=https://www.google.com/search%3Fq%3Dkeyword%2Bplanner%26ie%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3Dorg.mozilla:en-US:official%26client%3Dfirefox-aWith a Server not found error in Firefox. I kept trying and it persisted. However it's all right with google.com.hk which doesn't go to ipv6.google.com. I tried to ping ipv6.google.com but ended up with this:Ping request could not find host ipv6.google.com. Please check the  name and try again.Any idea how I can make this error go away with google.com? Or probably set something in my Google search settings to disable it from going to ipv6.google.com?
Server not found when searching through Google
google search