"We are pleased to announce the official release of OpenBSD 4.3," began OpenBSD creator Theo de Raadt. "This is our 23nd release on CD-ROM (and 24rd via FTP). We remain proud of OpenBSD's record of more than ten years with only two remote holes in the default install." He added, "as in our previous releases, 4.3 provides significant improvements, including new features, in nearly all areas of the system". Four platforms were listed as new or extended, including: sparc64 gained SMP support, "this should work on all supported systems, with the exception of the Sun Enterprise 10000"; hppa K-class servers are now supported; mvme88k gained SMP support on a couple of systems, and support for the 88110 processor was added. Numerous drivers were listed as new or improved, including a huge list of network drivers:
"That code is not free enough for us to use, and therefore we don't use it."
— Theo de Raadt, in an October 23rd, 2007 message on the OpenBSD -misc mailing list.
"You are trying to make sure that maintainers of code -- ie. any random joe who wants to improve the code in the future -- has LESS ACCESS to docs later on because someone signed an NDA to write it in the first place."
— Theo de Raadt, in a February 14th, 2007 message posted to the OpenBSD -misc Mailing List.