config ntpserver '1' option hostname 'time1.google.com' config ntpserver '2' option hostname 'time2.google.com' config ntpserver '3' option hostname 'time3.google.com' config ntpserver '4' option hostname 'time4.google.com' config ntpdrift 'ntpdrift' option freq '0' config ntpclient 'ntpclient' option enabled '1' option interval '86400' option zoneName 'UTC'