Just to inform devs for fix when you reach the max amount of banned IP and try to ban one more client, server console and logfile get uberflooded with a continuous :

EXCEPTION: SV_AddEntities - Loop! EXCEPTION CODE: -1073741819
EXCEPTION: SV_AddEntities - Loop! EXCEPTION CODE: -1073741819
EXCEPTION: SV_AddEntities - Loop! EXCEPTION CODE: -1073741819
EXCEPTION: SV_AddEntities - Loop! EXCEPTION CODE: -1073741819
EXCEPTION: SV_AddEntities - Loop! EXCEPTION CODE: -1073741819
EXCEPTION: SV_AddEntities - Loop! EXCEPTION CODE: -1073741819
EXCEPTION: SV_AddEntities - Loop! EXCEPTION CODE: -1073741819
EXCEPTION: SV_AddEntities - Loop! EXCEPTION CODE: -1073741819
EXCEPTION: SV_AddEntities - Loop! EXCEPTION CODE: -1073741819
EXCEPTION: SV_AddEntities - Loop! EXCEPTION CODE: -1073741819