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Groups > linux.debian.kernel > #71004

Bug#987815: MPTCP is not enabled

Cross-posted to 2 groups.

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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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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

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