Whereis BIND 8.4.3? Due to an unfortunate bug in BIND 8.4.3, ISC has pulled this version. The bug is not security related but triggers BIND do generate lots of nnecessary additional queries under some circumstances with a potential for operational impact. BIND 8.4.4 will be available soon as a replacement. If you have downloaded a copy of BIND 8.4.3, do not use it in a production environment.