[Bug 1855] New: set traffic class on IPv6 packets

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=1855

           Summary: set traffic class on IPv6 packets
           Product: Portable OpenSSH
           Version: 5.8p1
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: ssh
        AssignedTo: unassigned-bugs at mindrot.org
        ReportedBy: cjwatson at debian.org


Created attachment 1994
  --> https://bugzilla.mindrot.org/attachment.cgi?id=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.

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