have you tried? 
  
Using BC2 Guardian  
  
This section is for using the RCON tool called BC2 Guardian. It can be found here 
  
 
  
In the Command Text Box send the following commands one at a time while pressing the Send button  
  
pb_sv_writecfg pbucon.use 
pb_sv_restart  
  
Wait for PB to restart (Approx 10-30 seconds)  
pb_sv_USessionLimit 8 
pb_sv_uconadd 1 208.122.49.138 pbbhub1 pbbanshub 
pb_sv_task 0 3600 pb_sv_ver 
pb_sv_task 0 86400 pb_sv_update 
pb_sv_AutoUpdBan 1 
pb_sv_writecfg  
  
All entered commands will appear in the text box as shown above.  
  
NOTE 1: If you wish to disable "live banning" and other planned enhanced Hub features pb_sv_uconadd 0 208.122.49.138 pbbhub1 pbbanshub should be used. 
  
NOTE 2: If your server is empty for a long time, it can be shown as non streaming. If this happens make sure you sent the pb_sv_task 0 3600 pb_sv_ver command. 
  
using that i can get mine streaming fine