ntpclient

config ntpserver
        option hostname '0.openwrt.pool.ntp.org'
        option port     '123'

config ntpserver
        option hostname '1.openwrt.pool.ntp.org'
        option port     '123'

config ntpserver
        option hostname '2.openwrt.pool.ntp.org'
        option port     '123'

config ntpserver
        option hostname '3.openwrt.pool.ntp.org'
        option port     '123'

config ntpdrift
        option freq     '0'

config ntpclient
        option interval 600
        #option count   10
        #option interface wan