Bug 754781 – wrong MTU on VPN connections

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Bug 754781 - wrong MTU on VPN connections


Summary:	wrong MTU on VPN connections


Status:	RESOLVED FIXED

Product:	NetworkManager
Classification:	Platform
Component:	VPN (general)
Version:	1.0.x
Hardware:	Other Linux

Importance:	Normal normal
Target Milestone:	---
Assigned To:	Lubomir Rintel
QA Contact:	NetworkManager maintainer(s)

URL:
Whiteboard:

Depends on:
Blocks:

Reported:	2015-09-09 13:21 UTC by Scott
Modified:	2015-09-30 10:20 UTC

See Also:	https://bugs.gentoo.org/show_bug.cgi?id=559908 https://bugzilla.redhat.com/show_bug.cgi?id=1244547
GNOME target:	---
GNOME version:	---

Attachments
vpn mtu patch (761 bytes, patch) 2015-09-09 13:21 UTC, Scott	none	Details \| Review
[PATCH] vpn-connection: set the MTU for the VPN IP interface (2.01 KB, text/plain) 2015-09-28 19:02 UTC, Lubomir Rintel		Details

Description Scott 2015-09-09 13:21:17 UTC

Created attachment 310978 [details] [review]
vpn mtu patch

On versions of network manager >1.0.2 connecting to a vpn (using openconnect in my case) results in an incorrect MTU being set for the vpn tunnel. I was able to bisect back to this commit as the source http://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=9b79e6c732ffb2fb105647c1465070d36a6cc180

I am attaching a patch, though it is simply a reversion patch that may need some love, that resolves the issue that I am experiencing (tested applied to 1.0.6).

Comment 1 Thomas Haller 2015-09-22 12:54:12 UTC

[FTR] there is downstream bug https://bugs.launchpad.net/network-manager/+bug/1498474 ...

Comment 2 Lubomir Rintel 2015-09-28 19:02:29 UTC

Created attachment 312320 [details]
[PATCH] vpn-connection: set the MTU for the VPN IP interface

Comment 3 Lubomir Rintel 2015-09-28 19:03:46 UTC

Thanks for the report. Here's the patch I'd like to apply to address the issue.

Comment 4 Thomas Haller 2015-09-29 16:09:47 UTC

LGTM.

Note that the patch applies on nm-1-0 branch. Could you first apply it on master, and then cherry-pick it...?

Comment 5 Lubomir Rintel 2015-09-29 16:42:11 UTC

nm-1-0: 105e30e vpn-connection: set the MTU for the VPN IP interface
master: e0fa48f vpn-connection: set the MTU for the VPN IP interface