[Bug 1965] New: IPQoS option ignored for AF_INET since 5.9p1-1
bugzilla-daemon at bugzilla.mindrot.org
bugzilla-daemon at bugzilla.mindrot.org
Sun Dec 18 22:13:31 EST 2011
https://bugzilla.mindrot.org/show_bug.cgi?id=1965
Bug #: 1965
Summary: IPQoS option ignored for AF_INET since 5.9p1-1
Classification: Unclassified
Product: Portable OpenSSH
Version: 5.9p1
Platform: All
URL: http://bugs.debian.org/643312
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: ssh
AssignedTo: unassigned-bugs at mindrot.org
ReportedBy: bugzilla.mindrot.org at pobox.madduck.net
CC: helmut at subdivi.de
Since version 1:5.9p1-1 the IPQoS option is ignored for AF_INET
sockets.
Running ssh -F /dev/null -vvv -o IPQoS=lowdelay somehost true gives
this.
debug2: client_session2_setup: id 0
debug2: fd 3 setting TCP_NODELAY
debug1: Sending command: true
Downgrading just openssh-client to 1:5.8p1-7 gives this.
debug2: client_session2_setup: id 0
debug2: fd 3 setting TCP_NODELAY
debug3: packet_set_tos: set IP_TOS 0x10
debug1: Sending command: true
Unfortunately I cannot tell you precisely what broke. Looking at the
binary I can see that the relevant log message is contained, so the
relevant code is still present in the binary.
Curiously, exactly the opposite behaviour exists for AF_INET6:
With 1:5.8p1-7:
% ssh -vvvo 'IPQoS ef' -6 -Snone vera true 2>&1 >/dev/null | egrep
tos || echo no match
no match
With 1:5.9p1-2:
% ssh -vvvo 'IPQoS ef' -6 -Snone vera true 2>&1 >/dev/null | egrep
tos || echo no match
debug3: packet_set_tos: set IPV6_TCLASS 0x08
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