[Bro] internal warning: bad request for InternalUnsigned

[臧冬松]

hi,
When I use bro-0.9a9 on a linux system,there's lots of warnings on the screen:
1120748634.654520 <no location> (768): internal warning: bad request for InternalUnsigned
1120748634.654520 <no location> (769): internal warning: bad request for InternalUnsigned
1120748635.289065 <no location> (2): internal warning: bad request for InternalUnsigned
1120748635.289065 <no location> (768): internal warning: bad request for InternalUnsigned
1120748635.289065 <no location> (769): internal warning: bad request for InternalUnsigned
1120748635.291004 <no location> (2): internal warning: bad request for InternalUnsigned
1120748635.291004 <no location> (768): internal warning: bad request for InternalUnsigned
1120748635.291004 <no location> (769): internal warning: bad request for InternalUnsigned
1120748678.874703 <no location> (2): internal warning: bad request for InternalUnsigned
1120748678.874703 <no location> (768): internal warning: bad request for InternalUnsigned
1120748678.874703 <no location> (769): internal warning: bad request for InternalUnsigned
1120748678.876645 <no location> (2): internal warning: bad request for InternalUnsigned
1120748678.876645 <no location> (768): internal warning: bad request for InternalUnsigned
1120748678.876645 <no location> (769): internal warning: bad request for InternalUnsigned
1120748678.930197 <no location> (2): internal warning: bad request for InternalUnsigned
1120748678.930197 <no location> (768): internal warning: bad request for InternalUnsigned
1120748678.930197 <no location> (769): internal warning: bad request for InternalUnsigned
some one tell me why?
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