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Date:      Tue, 21 Aug 2012 23:23:42 +0400
From:      Slawa Olhovchenkov <slw@zxy.spb.ru>
To:        Lev Serebryakov <lev@FreeBSD.org>
Cc:        Ian Lepore <freebsd@damnhippie.dyndns.org>, freebsd-current@freebsd.org
Subject:   Re: r239356: does it mean, that synchronous dhcp and dhcplcinet with disabled devd gone?
Message-ID:  <20120821192342.GU98910@zxy.spb.ru>
In-Reply-To: <867456073.20120821221815@serebryakov.spb.ru>
References:  <201208210934.31484.jhb@freebsd.org> <1049151425.20120821190433@serebryakov.spb.ru> <1345562163.27688.347.camel@revolution.hippie.lan> <709115163.20120821192652@serebryakov.spb.ru> <1345564507.27688.354.camel@revolution.hippie.lan> <1409150425.20120821210152@serebryakov.spb.ru> <1345570590.27688.367.camel@revolution.hippie.lan> <753514912.20120821214027@serebryakov.spb.ru> <20120821174746.GD88729@zxy.spb.ru> <867456073.20120821221815@serebryakov.spb.ru>

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On Tue, Aug 21, 2012 at 10:18:15PM +0400, Lev Serebryakov wrote:

> SO> Not re-request lease, simple renew.
>   Sorry, I'm not very strong in exact terms here.

dhcp client can sent different requests:

DHCPDISCOVER from 0.0.0.0 to 255.255.255.255
DHCPREQUEST from 0.0.0.0 to SERVER_IP (from DHCPOFFER)

or

DHCPRELEASE
DHCPDISCOVER from 0.0.0.0 to 255.255.255.255
DHCPREQUEST from 0.0.0.0 to SERVER_IP

or

DHCPREQUEST from 0.0.0.0 to 255.255.255.255

or

DHCPREQUEST from IP to SERVER_IP

and DHCPINFORM for quering additional parametrs after boot, w/o change
IP (for example IE request information about proxy auto config)

renew address at lease_time/2 usually DHCPREQUEST from IP to SERVER_IP.



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