Please help me understand this alert output

[Hanasaki JiJi <hanasaki () hanaden com>]

Below is one of MANY alerts being loged on my internal network.  It is a 
very small network.  how can i find what is causing the bad traffice, 
and rectify it?

[**] [1:1322:4] BAD TRAFFIC bad frag bits [**]
[Classification: Misc activity] [Priority: 3]
11/29-11:38:11.405389 192.168.1.200 -> 192.168.1.1
UDP TTL:64 TOS:0x0 ID:12106 IpLen:20 DgmLen:1500 DF MF
Frag Offset: 0x0000   Frag Size: 0x05C8



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