Require ntp to be built with caps USE flag
When I installed ntpd-66serv, it wouldn't start. I got this error in the logs
2020-12-31 23:50:29.784301074 /usr/sbin/ntpd: The 'user' option has been disabled. -- built without --enable-clockctl or --enable-linuxcaps or --enable-solarisprivs
2020-12-31 23:50:29.784305756 ntpd - NTP daemon program - Ver. 4.2.8p15
2020-12-31 23:50:29.784306557 Usage: ntpd [ -<flag> [<val>] | --<name>[{=| }<val>] ]... \
2020-12-31 23:50:29.784307340 [ <server1> ... <serverN> ]
Building with the caps
flag seems to solve it.