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From what I can tell based on observations of my own OS X 10.8.5 machine, and the information in "Windows clients not using NTP server provided via DHCP," neither OS X nor Windows 7 are able to auto-configure their NTP servers. So, which DHCP clients do this? ... by default, or after special configuration?

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closed as off-topic by Ƭᴇcʜιᴇ007, Tog, Mokubai, laurent, Simon Sheehan Oct 14 '13 at 15:47

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This basically boils down to a product recommendation/list request, which are considered off-topic. –  Ƭᴇcʜιᴇ007 Oct 9 '13 at 19:37
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@techie007 He's asking almost at the end if he needs to make a configuration to his current clients (W7 and OSX) to accept this option specified in the DHCP implementation, or if he needs another client to get this functionality, which is not software recommendation and a very valid question that I'm surprised that it hasn't be asked somewhere else. –  Braiam Oct 9 '13 at 20:30
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@Kronos A DHCP "client" is a piece of software. I think I'm reading a different question than you guys. ;) "neither OS X nor Windows 7 are able to auto-configure their NTP servers" is NOT asking how to configure them, it's stating that they don't support it (which is true). "So, which DHCP clients do this?" -- User has already realized/stated that the W7 and OSX DHCP clients don't support this, so he's asking which (other) DHCP clients DO support it. –  Ƭᴇcʜιᴇ007 Oct 29 '13 at 17:44
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@KronoS Yes, DHCP is a protocol (that's the P). A "DHCP client" (in this post's context) would be a piece of software interfacing with a "DHCP server", whether the client is integrated with the OS or not. As an aside, I don't think the DHCP client in Windows (for example) is as integrated as you think. It's just a service, it could probably be replaced relatively easily if you found or wrote your own compatible DHCP client. –  Ƭᴇcʜιᴇ007 Oct 29 '13 at 23:24
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@techie007 no matter how we 'classify' this question, I think we both agree that it's not a good fit for SU in it's current condition. –  KronoS Oct 30 '13 at 4:24

1 Answer 1

up vote 2 down vote accepted

The ISC DHCP client (which is used in almost any Linux distribution) and its variants accept the NTP field. There isn't another well known/universal client that accepts this value.

If I have to guess about why OSX nor Windows supports this option, I would say is due the various flaws that the base DHCP protocol has, like no Authentification Method, since mal intentioned DHCP servers could change your systems clocks, etc. Also, there aren't lots of DHCP clients out there (I only know Windows and ISC-based clients), so that leave little (or no) options where to pick.

Maybe OS X allows you to install another DHCP client, Windows isn't so easy, but you could be sure that Linux does.

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