ntpd[3012]: sendto(203.109.252.7) (fd=21): Invalid argument ??

[sean]

/var/log/messages is full of:

Nov 20 21:13:25 localhost ntpd[3012]: sendto(203.109.252.7) 
(fd=21): Invalid argument
Nov 20 21:28:57 localhost ntpd[3012]: sendto(195.224.39.103) 
(fd=21): Invalid argument
Nov 20 21:30:13 localhost ntpd[3012]: sendto(193.226.140.53) 
(fd=21): Invalid argument
Nov 20 21:30:28 localhost ntpd[3012]: sendto(203.109.252.7) 
(fd=21): Invalid argument
Nov 20 21:46:01 localhost ntpd[3012]: sendto(195.224.39.103) 
(fd=21): Invalid argument
Nov 20 21:47:17 localhost ntpd[3012]: sendto(193.226.140.53) 
(fd=21): Invalid argument
Nov 20 21:47:32 localhost ntpd[3012]: sendto(203.109.252.7) 
(fd=21): Invalid argument

is this a config error, or a bug?

sean