[Bug 407173] Re: openssh: Please set traffic class on IPv6 packets

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On 2011-02-08T14:53:21+00:00 Colin Watson wrote:

Created attachment 1994
set IPV6_TCLASS for IPv6 connections

Lionel Elie Mamane <lionel at mamane.lu> sent this report as
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=498297:

  OpenSSH sets the IPv4 ToS (Type of Service) byte to "low delay" or "max throughput" depending on the situation, but does not set the
equivalent IPv6 Traffic Class byte. As far as I understand, these two
bytes are supposed to be used the same way, so here's a patch to set
the said traffic class byte on IPv6 packets.

I've attached a version of his patch updated to current HEAD, and adding
a guard against systems where IPV6_TCLASS isn't defined.

Reply at: https://bugs.launchpad.net/openssh/+bug/407173/comments/1

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On 2011-05-15T04:04:16+00:00 Djm wrote:

This has been committed and will be in OpenSSH 5.9. Thanks

Reply at: https://bugs.launchpad.net/openssh/+bug/407173/comments/2

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On 2011-09-06T05:33:06+00:00 Djm wrote:

close resolved bugs now that openssh-5.9 has been released

Reply at: https://bugs.launchpad.net/openssh/+bug/407173/comments/3


** Changed in: openssh
       Status: Unknown => Fix Released

** Changed in: openssh
   Importance: Unknown => Wishlist

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https://bugs.launchpad.net/bugs/407173

Title:
  openssh: Please set traffic class on IPv6 packets

Status in Portable OpenSSH:
  Fix Released
Status in “openssh” package in Ubuntu:
  Triaged
Status in “openssh” package in Debian:
  Confirmed

Bug description:
  OpenSSH sets the IPv4 ToS (Type of Service) byte to "low delay" or
  "max throughput" depending on the situation, but does not set the
  equivalent IPv6 Traffic Class byte.  As far as I understand, these two
  bytes are supposed to be used the same way.  Debian bug
  http://bugs.debian.org/498297 has a patch to correct this.

  http://bugs.debian.org/cgi-
  bin/bugreport.cgi?msg=5;filename=openssh_set_ipv6_traffic_class.patch;att=1;bug=498297

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