In article <[EMAIL PROTECTED]> Harlan Stenn <[EMAIL PROTECTED]> writes: >>>> In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] (Danny >Mayer) writes: > >P> As you might have seen elsewhere I do agree that this is only a good >P> idea under well defined circumstances, and I would now add that it is >P> difficult to ascertain up-front whether these conditions are met (i.e. >P> whether it would be desirable for a particular NTP server on a dynamic IP >P> address to be admitted to the pool). > >Danny> There are *no* circumstances where this is a good idea. You *cannot* >Danny> make use of a server that is constantly moving IP address. Even fixed >Danny> IP addresses can be problematic in this environment since the clients >Danny> don't requery for addresses after they come up and if someone decides >Danny> to move the server elsewhere, they will never know about it. > >Danny, while you are right that one cannot expect to get useful NTP service >from a moving IP address you are flat out wrong that all DHCP-assigned >addresses fall in to this category. > >I think you have tunnel-vision in this case, and are being blind to some >cases where obvious/known counter-examples exist. > >P> Please remember that I started this suggestion in the context of a >P> discussion of code being added to ntpd that re-resolves server addresses >P> in case of non-reachability. Such code, _if deployed on a critical mass >P> of clients_ (i.e. optimistically, not for a good few years) would address >P> your concern (while not completely removing it). > >Danny> We are not the only provider of NTP Clients or for that matter >Danny> servers and unless they also make changes to also do this and have >Danny> everyone upgrade the problem will remain. For most people/admins this >Danny> is a set and forget item when they set up a system. > >Danny, from my POV you didn't even address Per's point, and his point seems >perfectly valid to me.
I don't know which "Per" you may be referring to, but anyway the sections marked "P>" above were written by Jan Ceuleers. (That's what you get for trying to quote for once.:-) --Per Hedeland [EMAIL PROTECTED] _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
