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Bug#987815: MPTCP is not enabled

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  Bug#987815: MPTCP is not enabled chrysn <chrysn@fsfe.org> - 2021-04-30 11:30 +0200
    Bug#987815: MPTCP is not enabled Salvatore Bonaccorso <carnil@debian.org> - 2021-05-01 09:50 +0200
    Processed: Re: Bug#987815: MPTCP is not enabled "Debian Bug Tracking System" <owner@bugs.debian.org> - 2021-05-01 09:50 +0200
    Bug#987815: marked as done (MPTCP is not enabled) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2021-08-20 23:40 +0200

#70930 — Bug#987815: MPTCP is not enabled

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Source: linux
Version: 5.10.28-1
Severity: wishlist


The current configuration does not enable the multipath TCP
functionality provided by the kernel through the MPTCP (and the
the-default MPTCP_IPV6) binary options.

These have been available since kernel version 5.6.

When enabled, user space applications can opt in to MPTCP behavior by
using the new IPPROTO_MPTCP; regular TCP connections are unaffected.

Applications using this are starting slowly (outside of the Apple
ecosystem where this has been in used for years to ensure smooth network
handovers), but having this available widely would make it easier for
application developers to verify MPTCP operation on systems where they
can't easily (or don't have the experience to) rebuild their kernel with
CONFIG_MPTCP=y.

Please consider enabling this feature.


-- System Information:
Debian Release: 11.0
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.12.0-rc5 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

-- 
To use raw power is to make yourself infinitely vulnerable to greater powers.
  -- Bene Gesserit axiom

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#71004

Control: tags -1 + confirmed

Hi,

On Fri, Apr 30, 2021 at 11:18:40AM +0200, chrysn wrote:
> Source: linux
> Version: 5.10.28-1
> Severity: wishlist
> 
> 
> The current configuration does not enable the multipath TCP
> functionality provided by the kernel through the MPTCP (and the
> the-default MPTCP_IPV6) binary options.
> 
> These have been available since kernel version 5.6.
> 
> When enabled, user space applications can opt in to MPTCP behavior by
> using the new IPPROTO_MPTCP; regular TCP connections are unaffected.
> 
> Applications using this are starting slowly (outside of the Apple
> ecosystem where this has been in used for years to ensure smooth network
> handovers), but having this available widely would make it easier for
> application developers to verify MPTCP operation on systems where they
> can't easily (or don't have the experience to) rebuild their kernel with
> CONFIG_MPTCP=y.
> 
> Please consider enabling this feature.

I do agree, and there were requests as well offlist/offbts on this,
though we won't enable it anymore at this stage of the bullseye
release preparations for bullseye but will follow in a later
experimental upload.

Regards,
Salvatore

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#71005 — Processed: Re: Bug#987815: MPTCP is not enabled

Processing control commands:

> tags -1 + confirmed
Bug #987815 [src:linux] MPTCP is not enabled
Added tag(s) confirmed.

-- 
987815: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987815
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#72689 — Bug#987815: marked as done (MPTCP is not enabled)

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Your message dated Fri, 20 Aug 2021 21:35:32 +0000
with message-id <E1mHCAm-0002vr-Uw@fasolo.debian.org>
and subject line Bug#987815: fixed in linux 5.13.12-1~exp1
has caused the Debian Bug report #987815,
regarding MPTCP is not enabled
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
987815: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987815
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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