#acl All:read <> = OpenNTPD configuration guide = [[http://www.openntpd.org/|OpenNTPD]] supports IPv6 at least since version 3.6.p1. In its {{{ntpd.conf}}} configuration you must define which local IP addresses it listens on: {{{ # any IPv4/IPv6 addresses listen * # IPv4 loopback address # listen 127.0.0.1 # IPv6 loopback address # listen ::1 }}} You can specify multiple {{{listen }}} instructions if you wish.