Changeset 2b03a62 in rtems for cpukit/libnetworking

NTP: Sync time correctly when receiving broadcast updates

1) The value of rtems_bsdnet_ntpserver_count is equal to 0 when no

server is set, so the check for (rtems_bsdnet_ntpserver_count < 0)
in rtems_bsdnet_get_ntp() is wrong. The check should be "<= 0".

2) Binding the listening socket port to 0 does not work. Packets

appear on the interface, but the recvfrom in tryServer() never
returns. Changing this to the well known NTP socket 123 allows
the packets to be seen.

3) In tryServer(), an explicit check for NTP version 3 packets is made.

If the NTP server is version 4, this check fails even though the
packets seem to be the right shape.