ports/141686: ntpd 4.2.4p7 at 1.1607-o stops interferes with gpsd 2.39

[Scott Nolde]

>Number:         141686
>Category:       ports
>Synopsis:       ntpd 4.2.4p7 at 1.1607-o stops interferes with gpsd 2.39
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Dec 16 16:30:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Scott Nolde
>Release:        7.2-STABLE
>Organization:
>Environment:
FreeBSD gw.smnolde.com 7.2-STABLE FreeBSD 7.2-STABLE #1: Thu Dec  3 19:47:57 EST 2009     root at gw.smnolde.com:/usr/obj/usr/src/sys/FIREWALL7  i386
>Description:
Using a fully upgraded system, starting ntpd interferes with gpsd clients from gathering data.

Gpsd will communicate properly with my Delorme Earthmate and translate the binary output.

When ntpd 4.2.4p7 is started, gpsd output stops and no further gps output is gathered.

/etc/ntp.conf:
server  127.127.1.0 minpoll 9 maxpoll 9
fudge   127.127.1.0 stratum 10
server  127.127.31.0 prefer
server timex.peachnet.edu noselect
driftfile /var/db/ntp.drift
statsdir        /var/log/ntp/
filegen clockstats      file clockstats type day        enable
filegen peerstats       file peerstats  type day        enable
filegen loopstats       file loopstats  type day        enable
statistics clockstats peerstats loopstats
logfile /var/log/ntp/messages

The following driver types are compiled into this gpsd instance:
    Generic NMEA
    Ashtech
    Delorme TripMate
    Delorme EarthMate (pre-2003, Zodiac chipset)
    Furuno Electric GH-79L4
    MKT-3301
    AIVDM
    EverMore binary
    iTalk binary
    Navcom binary
    SiRF binary
    SuperStarII binary
    Trimble TSIP
    uBlox UBX binary
    Zodiac binary


>How-To-Repeat:
1. Start gpsd 2.39 and connect to the gpsd telnet server, issue command R to see raw (NMEA) data.
2. Start ntpd
3. Watch gpsd output stop.   Further gpsd commands will yield X=0? (lost sync to gps)
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: