On NetBSD/atari, luna68k and x68k, kernels print the following sysctl_createv errors during boot:
I just noticed that evbarm machines also have those errors: NetBSD 6.99.49 (PI) #1: Fri Jul 25 19:42:40 UTC 2014 john%chi.ziaspace.com@localhost:/usr/current/obj-evbarm/sys/arch/evbarm/compile/PI total memory = 448 MB avail memory = 436 MB sysctl_createv: sysctl_create(machine_arch) returned 17 sysctl_createv: sysctl_locate(multicast) returned 2 sysctl_createv: sysctl_locate(multicast_kludge) returned 2 John