Report information
The Basics
Id:
21237
Status:
resolved
Estimated:
16 hours (960 minutes)
Worked:
20 hours (1,200 minutes)
Users:
tmark: 20 hours (1,200 minutes)
Left:
16 hours (960 minutes)
Priority:
Low/Low
Queue:
dhcp-public
People
BugTracker
Version Fixed:
4.4.0
Version Found:
(no value)
Versions Affected:
(no value)
Versions Planned:
4.4.0
Priority:
P2 Normal
Severity:
S2 Normal
CVSS Score:
(no value)
CVE ID:
(no value)
Component:
DHCP Client
Area:
feature
Attachments
dhcp-4.1.1-dhclient-script-DAD.patch dhcp-4.1.1-sendDecline.patch
Dates
Created:Fri, 30 Apr 2010 10:07:54 -0400
Updated:Mon, 15 Jan 2018 14:49:00 -0500
Closed:Thu, 07 Dec 2017 06:27:58 -0500

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History
  Fri, 30 Apr 2010 10:07:54 -0400 Jiri Popelka <jpopelka@redhat.com> - Ticket created
Subject: Client should perform DAD and send Decline message when address is found to be in use on the link
Date: Fri, 30 Apr 2010 16:07:04 +0200
To: dhcp-suggest@isc.org
From: Jiri Popelka <jpopelka@redhat.com>

RFC 3315 says: The client SHOULD perform duplicate address detection [17] on each of the addresses in any IAs it receives in the Reply message before using that address for traffic. If any of the addresses are found to be in use on the link, the client sends a Decline message to the server as described in section 18.1.7. Attached is patch (dhcp-4.1.1-sendDecline.patch) that makes client send Decline message when dhclient-script returns value indicating that DAD failed. Next part of this problem is how to make dhclient-script discover that DAD failed. I'm not skilled with other OS besides linux so my patch (dhcp-4.1.1-dhclient-script-DAD.patch) fixes only dhclient-script for linux. It uses the fact that 'ip addr show' shows 'tentative' flag in address info when DAD is still not complete or failed. Thanks Jiri Popelka Red Hat, inc.
dhcp-4.1.1-sendDecline.patch

Message body is not shown because sender requested not to inline it.

dhcp-4.1.1-dhclient-script-DAD.patch

Message body is not shown because sender requested not to inline it.

Thu, 06 May 2010 01:45:51 -0400 Mark Andrews <marka@isc.org> - Status changed from 'new' to 'open'
Thu, 10 Mar 2011 19:00:28 -0500 Shawn Routhier <sar@isc.org> - Dependency by #23183: added
Tue, 04 Feb 2014 23:17:19 -0500 Shawn Routhier <sar@isc.org> - Dependency by #23183: deleted
Tue, 04 Feb 2014 23:17:19 -0500 Shawn Routhier <sar@isc.org> - Dependency by #24720: added
Wed, 04 May 2016 00:38:40 -0400 Shawn Routhier <sar@isc.org> - Priority P2 Normal added
Wed, 04 May 2016 00:38:40 -0400 Shawn Routhier <sar@isc.org> - Versions Planned 4.4.0 added
Wed, 04 May 2016 00:38:40 -0400 Shawn Routhier <sar@isc.org> - Severity S2 Normal added
Wed, 04 May 2016 00:38:41 -0400 Shawn Routhier <sar@isc.org> - Area feature added
Wed, 04 May 2016 00:38:41 -0400 Shawn Routhier <sar@isc.org> - Component DHCP Client added
Wed, 04 May 2016 00:38:42 -0400 Shawn Routhier <sar@isc.org> - FinalPriority changed from 'Low' to 'Low'
Wed, 04 May 2016 00:38:42 -0400 Shawn Routhier <sar@isc.org> - Priority changed from 'Low' to 'Low'
Mon, 09 May 2016 17:40:45 -0400 Shawn Routhier <sar@isc.org> - TimeEstimated changed from (no value) to '960'
Mon, 09 May 2016 17:40:46 -0400 Shawn Routhier <sar@isc.org> - TimeLeft changed from (no value) to '960'
Tue, 20 Jun 2017 13:27:20 -0400 Thomas Markwalder <tmark@isc.org> - Dependency by #36966: 4.1.ESV-R4-0Ubuntu5.9 - DHCPv6 DECLINE fails to send after the kernel detects IPv6 duplicated address added
Tue, 20 Jun 2017 15:28:52 -0400 Thomas Markwalder <tmark@isc.org> - Dependency by #23357: dhclient -6 doesn't handle addr declines [client] [protocol] added
Tue, 20 Jun 2017 15:29:16 -0400 Thomas Markwalder <tmark@isc.org> - Taken
Tue, 20 Jun 2017 15:29:43 -0400 Thomas Markwalder <tmark@isc.org> - Versions Planned 4.4.0 changed to 4.3.6
Wed, 21 Jun 2017 06:32:47 -0400 Thomas Markwalder <tmark@isc.org> - Queue changed from #10 to dhcp-public
Fri, 30 Jun 2017 06:35:53 -0400 Thomas Markwalder <tmark@isc.org> - Versions Planned 4.3.6 changed to 4.4.0
Tue, 10 Oct 2017 15:34:08 -0400 Thomas Markwalder <tmark@isc.org> - Untaken
Fri, 17 Nov 2017 09:04:33 -0500 Thomas Markwalder <tmark@isc.org> - Taken
Tue, 21 Nov 2017 15:50:59 -0500 Thomas Markwalder <tmark@isc.org> - Worked 20 hours (1,200 minutes) 1,200 minutes
Tue, 21 Nov 2017 15:50:59 -0500 Thomas Markwalder <tmark@isc.org> - Status changed from 'open' to 'review'
Tue, 21 Nov 2017 15:51:00 -0500 Thomas Markwalder <tmark@isc.org> - Untaken
Wed, 06 Dec 2017 10:30:11 -0500 Francis Dupont <Francis_Dupont@isc.org> - Taken
  Wed, 06 Dec 2017 15:23:12 -0500 Francis Dupont <Francis_Dupont@isc.org> - Correspondence added

Reviewing: - IMHO the state is more S_DECLINING than S_DECLINED but it is a matter of taste. - I'll more insisting by keeping S_STOPPED as the last item in the dhcp_state enum. Note they are cosmetic so no re-review needed.
Wed, 06 Dec 2017 15:23:12 -0500 Francis Dupont <Francis_Dupont@isc.org> - Given to Thomas Markwalder <tmark@isc.org>
Thu, 07 Dec 2017 06:27:56 -0500 Thomas Markwalder <tmark@isc.org> - Version Fixed 4.4.0 added
Thu, 07 Dec 2017 06:27:58 -0500 Thomas Markwalder <tmark@isc.org> - Status changed from 'review' to 'resolved'
Mon, 15 Jan 2018 14:49:00 -0500 Vicky Risk <vicky@isc.org> - Subject changed from 'Client should perform DAD and send Decline message when address is found to be in use on the link' to '[patch] Client should perform DAD and send Decline message when address is found to be in use on the link'