Re: [DNA-BOF] Comments on draft-kumar-dna-reqmnt-ipv4-00.txt

[Alper Yegin <alper@docomolabs-usa.com>]

>> This issue came up before. Can we really assume that an unexpired previous
>> configuration is still available to the client despite it had disconnected
>> from the link? Unless it is specifically prohibitied, I can imagine
>> resources being released when the network detects that the client has
>> disconnected.
> 
> A DHCP server doesn't know whether the client is disconnected or not, so
> the resource release, if it occurs at all, would occur on the client.  A
> client wanting to avoid unnecessary IP address acquisition would not
> release the resources and so could keep using the IP address until lease
> expiration.

Couldn't a DHCP server act upon a "link-layer trigger" and release the
resources? Unless this is prohibited in the DHCP specification, I suspect
this can very well happen.

Alper