Unspecified GSS failure with openssh

While you are logging in with ssh, if it takes a long time, check -vvv option to show verbose logs. If you waits for the following step,

debug1: Unspecified GSS failure. Minor code may provide more information No credentials cache found debug1: Unspecified GSS failure. Minor code may provide more information No credentials cache found debug1: Unspecified GSS failure. Minor code may provide more information No credentials cache found

please change /etc/ssh/ssh_config like:

GSSAPIAuthentication no