The man page for smb.conf(5) reads: ntp signd socket directory (G) This setting controls the location of the socket that the NTP daemon uses to communicate with Samba for signing packets. If a non-default path is specified here, then it is also necessary to make NTP aware of the new path using the ntpsigndsocket directive in ntp.conf. Default: ntp signd socket directory = $prefix/run/samba/ntp_signd On Gentoo, the default place ntp_signd turns up is instead "/var/lib/samba/ntp_signd".