1418833 – conntrack does not support Ipv6 NAT

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Bug 1418833 - conntrack does not support Ipv6 NAT

Summary: conntrack does not support Ipv6 NAT

Keywords:
Status:	CLOSED DUPLICATE of bug 1425552
Alias:	None
Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	conntrack-tools
Sub Component:
Version:	7.3
Hardware:	Unspecified
OS:	Unspecified
Priority:	unspecified
Severity:	unspecified
Target Milestone:	rc
Target Release:	---
Assignee:	Paul Wouters
QA Contact:	Li Shuang
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:	1426412
TreeView+	depends on / blocked

Reported:	2017-02-02 20:48 UTC by Neil Wilson
Modified:	2017-03-16 13:08 UTC (History)
CC List:	2 users (show)
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:
Clone Of:
Clones:	1426412 (view as bug list)
Environment:
Last Closed:	2017-03-16 13:08:01 UTC
Target Upstream Version:
Embargoed:

Attachments	(Terms of Use)
Fix IPv6 support in conntrack command (13.33 KB, patch) 2017-03-16 09:58 UTC, Neil Wilson	no flags	Details \| Diff
Reformatted patch to keep style (13.50 KB, patch) 2017-03-16 11:29 UTC, Neil Wilson	no flags	Details \| Diff
Show Obsolete (1) View All

Description Neil Wilson 2017-02-02 20:48:11 UTC

Description of problem:

The conntrack tools do not support creation of IPv6 nat entries


Version-Release number of selected component (if applicable):

Name        : conntrack-tools
Arch        : x86_64
Version     : 1.4.3
Release     : 1.el7


How reproducible:


Steps to Reproduce:

Run a conntrack insert command, e.g

conntrack -I --proto 6 --timeout 431994 --state ESTABLISHED --orig-src 2002:4f4a:ef7f:0000:50c5:4e4c:fb6c:5fce --orig-dst 2a02:1348:ffff:ffff:0000:0000:6d6b:275c --orig-port-src 59366 --orig-port-dst 22 --status ASSURED --dst-nat 2a02:1348:0178:73d1:0024:19ff:fee1:cf46


Actual results:

Command fails

# conntrack -I --proto 6 --timeout 431994 --state ESTABLISHED --orig-src 2002:4f4a:ef7f:0000:50c5:4e4c:fb6c:5fce --orig-dst 2a02:1348:ffff:ffff:0000:0000:6d6b:275c --orig-port-src 59366 --orig-port-dst 22 --status ASSURED --dst-nat 2a02:1348:0178:73d1:0024:19ff:fee1:cf46
conntrack v1.4.3 (conntrack-tools): mismatched address family
Try `conntrack -h' or 'conntrack --help' for more information.


Expected results:

Should create a flow as it does with IPv4

# conntrack -I --proto 6 --timeout 24 --state TIME_WAIT --orig-src 116.31.116.40 --orig-dst 109.107.39.92 --orig-port-src 61081 --orig-port-dst 22 --status ASSURED --dst-nat 10.225.207.70
conntrack v1.4.3 (conntrack-tools): 1 flow entries have been created.


Additional info:

Parsing of the dat-nat should follow the pattern for ip6tables, i.e. be in square brackets if there is a port redirection (e.g. [2a02:1348:0178:73d1:0024:19ff:fee1:cf46]:8080)

Comment 1 Neil Wilson 2017-02-03 10:08:25 UTC

v1.4.4 includes base support for IPv6 NAT in the library and conntrackd, but there is no fix for the conntrack command.

http://git.netfilter.org/conntrack-tools/commit/?id=f1ca2d9204996382411f4c93d4636a8ca8a46f44

Comment 3 Paul Wouters 2017-03-08 12:18:18 UTC


*** This bug has been marked as a duplicate of bug 1425552 ***

Comment 4 Neil Wilson 2017-03-08 13:03:33 UTC

It isn't a duplicate. 

conntrack is different from conntrackd. 

conntrackd has upstream support for IPv6 NAT. The conntrack command does not.

Comment 5 Neil Wilson 2017-03-16 09:58:15 UTC

Created attachment 1263616 [details]
Fix IPv6 support in conntrack command

Comment 6 Neil Wilson 2017-03-16 11:29:46 UTC

Created attachment 1263639 [details]
Reformatted patch to keep style

Comment 7 Paul Wouters 2017-03-16 13:08:01 UTC

Thanks for the patch. I've folded it into the other bug mostly to avoid some bureaucracy to get the package rebuild (1.4.4-2) with this patch included. So I'm closing this one as a duplicate, but the patch has now been included as part of 1425552

Thanks again!

*** This bug has been marked as a duplicate of bug 1425552 ***

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