Rapid DHCP: Or, how do Macs get on the network so fast?

Re:Rapid DHCP: Or, how do Macs get on the network so fast? by tzs on Tuesday July 12, 2011 @10:26PM (#2757534)

I don't see how this has anything to do with what Apple is doing. If you reboot the router and it starts issuing addresses from the beginning of its range, it is likely to issue addresses that conflict with the existing leases on the non-Apple computers.

If a DHCP server gives out an address, and then gives it out again before the least has expired or the first client has relinquished it, it is going to cause a conflict no matter who made the clients.

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Re:Rapid DHCP: Or, how do Macs get on the network so fast? by saurik on Tuesday July 12, 2011 @10:43PM (#2757574)

Before assigning an address to a client, a DHCP server will ping the address first to make certain someone isn't already using it (this behavior is even documented in the manual page of ISC dhcpd); therefore, it is only clients that join the network and assume their old lease is still valid (sniping it from one of the new clients that accidentally ended up with the IP address that used to be leased) that will cause this behavior.

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