flood - DC++ hub script?

We have a small problem it seems one dc++ owner put a script in his dc++ hub and everytime a user connects to his hub sends a request to my server. this kinda sucks because there is no way to identify the hub.

the logs looks smth. like:

Code:

89.38.254.175 - - [30/Jan/2007:19:35:29 +0200] "$MyNick [RO][B][wan]PuffyDawg|$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.698ABCABC|" 400 371
194.126.186.88 - - [30/Jan/2007:19:35:52 +0200] "$MyNick [RO][B][XCLUSIV]nana|$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.306ABCABC|" 400 371
89.36.234.49 - - [30/Jan/2007:19:36:01 +0200] "$MyNick [RO][B][Ch-Net][Coco]|$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.306ABCABC|" 400 371
86.55.117.134 - - [30/Jan/2007:19:36:03 +0200] "$MyNick [RO][B][K-NET]Anitaaa|$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|" 400 371
86.55.117.134 - - [30/Jan/2007:19:36:04 +0200] "$MyNick [RO][B][K-NET]Anitaaa|$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|" 400 371
84.232.216.82 - - [30/Jan/2007:19:36:10 +0200] "$MyNick [RO][B][RDS][SILVANADDD]|$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|" 400 371
84.232.216.82 - - [30/Jan/2007:19:36:10 +0200] "$MyNick [RO][B][RDS][SILVANADDD]|$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|" 400 371

any suggestions about hot to stop this affecting the server?

 

yup. too bad will slow down the server quite a bit