Man pages matching name arc4random_buf in section 3bsd:

arc4random_buf.3bsd.en	debian 10 / libbsd-dev
arc4random_buf.3bsd.en	debian 11 / libbsd-dev
arc4random_buf.3bsd.en	debian 12 / libbsd-dev
arc4random_buf.3bsd.en	debian 13 / libbsd-dev