Hi all, Recently, I have noticed that some clients can not connect (should be iOS and OS X). ocserv[2614]: worker: tlslib.c:378: no certificate was found ocserv[2614]: sec-mod: initiating session for user 'User' (session: HqLQN) ocserv[2613]: main[User]: x.x.x.x:xxxxx new user session ocserv[2613]: main[User]: x.x.x.x:xxxxx user logged in ocserv[2790]: worker[User]: x.x.x.x:xxxxx worker-vpn.c:1048: GnuTLS error (at worker-vpn.c:1048): The TLS connection was non-properly terminated. ocserv[2613]: main[User]: x.x.x.x:xxxxx user disconnected ocserv[2614]: sec-mod: temporarily closing session for User (session: HqLQN) ocserv[2613]: main: x.x.x.x:xxxxx: too short UDP packet It was worked, and I do not have to modify any configuration. All software are updated. gnutls 3.4.3 ocserv 0.10.6 Another problem, I noticed same clients sometimes MTU will be reduced to less than 200, this what happened? MTU is greater than 1300 at the beginning connection. Are these two issues related? Thanks.