[ntp:questions] Problem troubleshooting gps/pps on freebsd 8.1

[Peter S]

My ntp.conf:

driftfile /var/db/ntp.drift
logfile /root/ntpd.log

server  127.127.20.0    mode 16 minpoll 4 maxpoll 4 prefer
fudge   127.127.20.0    time1 0.0 time2 0.200 flag1 1 flag2 0 flag3 1
flag4 0

restrict default noquery nomodify
restrict 127.0.0.1