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Sergei Viznyuk wrote: > I think I might have seen this question here already but I missed > the answer if any. > According to RFC 2131 a DHCP client after receiving DHCP_ACK message > from DHCP server but before configuring network interface must > verify the validity of offered IP address supposely by broadcasting > ARPOP_REQUEST message and reading ARPOP_REPLY in a case the offered > IP address already exists. It is the normal "gratuitous arp" (or some such). What you do is: 10:30:27.187875 <new-ozon-hw-addr -> broadcast> arp who-has ozon tell ozon 10:30:27.187875 <old-ozon-hw-addr -> new-ozon> arp reply ozon is-at x:y:z:u:v if there is a host with IP address "ozon" it will reply to the new ozon-hw-addr, at which point, the new ozon should reject the new IP address it got using DHCP (or through whatever other means). Roger. -- ** R.E.Wolff@BitWizard.nl ** +31-15-2137555 ** http://www.BitWizard.nl/ ** Florida -- A 39 year old construction worker woke up this morning when a 109-car freight train drove over him. According to the police the man was drunk. The man himself claims he slipped while walking the dog. 080897 | ||||||||||||
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