Error in the pull function/Linux 4.15

[Michael Thayer]

Update: the Cisco client can't keep the connection with 4.13 either, so
that is probably not relevant.

16.03.2018 14:20, Michael Thayer wrote:
> Hello,
> 
> This is shadowing Ubuntu launchpad bug 1754601[1].  When I boot my
> 64-bit Ubuntu 18.04 system with the default 4.15 kernel, openconnect
> connections to our company VPN quickly fail with the following in the
> output:
> 
> SSL read error: Error in the pull function.; reconnecting.
> SSL negotiation with <server>
> SSL connection failure: The operation timed out
> sleep 10s, remaining timeout 300s
> SSL negotiation with <server>
> SSL connection failure: The operation timed out
> sleep 20s, remaining timeout 290
> ...
> 
> I have seen the connection recover once that I can remember after this
> failure.  I can still connect when I boot into the 4.13 kernel from
> Ubuntu 17.10.  The Cisco VPN client was also unable to connect under the
> 4.15 kernel, but I have not/never tried it with 4.13.
> 
> [1] https://bugs.launchpad.net/ubuntu/+source/openconnect/+bug/1754601
> 
> I have GNUTLS_DEBUG_LEVEL=99 logs for both successful (4.13) and
> unsuccessful (4.15) connections.  What can/should I censor from the logs
> before providing them?  URLs and IPs I assume; there do not seem to be
> any "webvpn" lines in either file, nor user name or password.  Is there
> anything else I can do to debug this, or is it obvious to someone?  I
> also tried a rebuild with "--without-gnutls --with-openssl=yes" which
> did not seem to get be anywhere either.
> 
> Many thanks.
> Regards
> Michael
> 

-- 
Michael Thayer | VirtualBox engineer
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