SSL function sometimes (!) fails

[Fabian Jäger]

Dear experts,
one of my customers is reporting problems with openconnect. In his logs the following messages appear:

POST https://paxasa.livegamer.com/
2015/08/14 19:49:16:488  Attempting to connect to server 38.102.157.175:443
2015/08/14 19:49:16:583  SSL negotiation with paxasa.livegamer.com
2015/08/14 19:49:16:980  SSL connection failure
2015/08/14 19:49:16:981  123145303453776:error:1409441B:SSL routines:ssl3_read_bytes:tlsv1 alert decrypt error:s3_pkt.c:1472:SSL alert number 51
2015/08/14 19:49:16:981  Failed to open HTTPS connection to paxasa.livegamer.com
2015/08/14 19:49:16:981  Failed to obtain cookie from remote host. Cancelling…

The line with the SSL routine looks suspicious. Do you have any idea what might cause the problem? Is it the OpenSSL version that I am linking to?

Best regards,
Fabian