On Mon, 4 Dec 2023 00:20:45 -0500 Jeffrey Walton <[email protected]> wrote:
> I'm not sure that is correct. According to RFC 2132, Section 8.3, the > NTP time server source option is IP addresses, not hostnames. That > means ISC DHCP docs need to say it resolves a hostname to an IP, or it > needs to tell people to use IP addresses in accordance with the RFC. > See <https://datatracker.ietf.org/doc/html/rfc2132#section-8.3>. Well, I don't know about the RFC, but the ISC DHCP server gets along find with host names. From my /etc/dhcp/dhcpd.conf: option ntp-servers ntp.localdomain, ntp1.localdomain; # issola, aliased; chaffee, aliased. I think the server looks the addresses up and transmits the addresses. My clients see IP addresses, anyway. > > If you try that [using a hostname in NTP server option] with the ISC's > KEA DHCP (KEA is ISC's rewrite of the old DHCP server), then the > server fails to start. You must use an IP address for NTP server > option with KEA DHCP. Well, that's silly. One of the nice things about using host names is that you can move the service from one machine to another (as I just did) and all you have to do is change the alias in your zone file. I'm not going to look to see if a more recent RFC amends that. -- Does anybody read signatures any more? https://charlescurley.com https://charlescurley.com/blog/
