Your message dated Fri, 08 Sep 2017 16:36:32 +0200
with message-id <[email protected]>
and subject line Re: [Pkg-swan-devel] Bug#874503: warn about unsupported kernel
versions
has caused the Debian Bug report #874503,
regarding warn about unsupported kernel versions
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.
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--
874503: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=874503
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: strongswan
Version: 5.5.1-4+deb9u1
There is some issue with kernel version 4.11
strongswan wasn't working, I looked with tcpdump and saw messages like
"truncated-udplength 0"
I used a search engine to find out about that string and it took me to
this page:
https://www.linuxquestions.org/questions/linux-networking-3/strongswan-ikev2-clients-can-access-everything-but-strongswan-machine-itself-truncated-udp-length-0-a-4175606751/
with the quote "So this appears to be a kernel-related issue; I had
updated to 4.11.2 recently. Downgrading back to 4.10.9, without any
other changes to my setup, resolves the problem."
I downgraded my own system to a 4.9 kernel and it worked again.
There was no obvious error from StrongSWAN in the console or in the logs
to tell me about this, I can imagine some people losing a lot of time on
something like this if they don't come across this page.
Regards,
Daniel
--- End Message ---
--- Begin Message ---
On Wed, 2017-09-06 at 15:57 +0100, Daniel Pocock wrote:
> There is some issue with kernel version 4.11
>
> strongswan wasn't working, I looked with tcpdump and saw messages like
> "truncated-udplength 0"
>
> I used a search engine to find out about that string and it took me to
> this page:
>
> https://www.linuxquestions.org/questions/linux-networking-3/strongswan-ikev2
> -clients-can-access-everything-but-strongswan-machine-itself-truncated-udp-
> length-0-a-4175606751/
>
> with the quote "So this appears to be a kernel-related issue; I had
> updated to 4.11.2 recently. Downgrading back to 4.10.9, without any
> other changes to my setup, resolves the problem."
>
> I downgraded my own system to a 4.9 kernel and it worked again.
>
> There was no obvious error from StrongSWAN in the console or in the logs
> to tell me about this, I can imagine some people losing a lot of time on
> something like this if they don't come across this page.
Well, that's a bug in the Linux kernel then, which should be fixed there. I
don't really see the point in adding documentation for kernel bugs in
strongSwan, although I sympathize about the lack of information.
When you have identified the relevant kernel versions, commit IDs fixing the
bug etc., feel free to add them to that bug.
Regards,
--
Yves-Alexis
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