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4724. [func] By default, BIND now uses the random number functions provided by the crypto library (i.e., OpenSSL or a PKCS#11 provider) as a source of randomness rather than /dev/random. This is suitable for virtual machine environments which have limited entropy pools and lack hardware random number generators. This can be overridden by specifying another entropy source via the "random-device" option in named.conf, or via the -r command line option; however, for functions requiring full cryptographic strength, such as DNSSEC key generation, this cannot be overridden. In particular, the -r command line option no longer has any effect on dnssec-keygen. This can be disabled by building with "configure --disable-crypto-rand". [RT #31459] [RT #46047]