Possible DOS in Bind 8.2.2-P5

Hi, playing with bind and ZXFR feature zone transfer compressed with a possible insecure execlp"gzip", "gzip", NULL; , i discovered a Denial Of Service against Bind 8.2.2-P5 . By default Bind 8.2.2-P5 it's not compiled with ZXFR support unless you define it with define BINDZXFR so it will refuse...