Same problem here ! with my client android 6. I downgraded to AS 2.0.24 and work perfect now. LOG problem with the 2.0.25 here :
2016-03-16 19:51:54+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:51:54 2016 xx.xx.202.70:36746 Control Channel: TLSv1.2, cipher TLSv1/SSLv3 ECDHE-RSA-AES256-GCM-SHA384, 2048 bit RSA'
2016-03-16 19:51:54+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:51:54 2016 xx.xx.202.70:36746 [user] Peer Connection Initiated with [AF_INET]xx.xx.202.70:36746'
2016-03-16 19:51:54+0100 [-] AUTH SUCCESS {'status': 0, 'reason': 'PAM auth succeeded', 'serial_list': [], 'user': u'user', 'proplist': {u'type': u'user_connect', u'prop_autogenerate': u'true'}, 'common_name': u'user', 'serial': '3'} cli=u'android'/u'3.0.3'
2016-03-16 19:51:54+0100 [-] OVPN 0 OUT: "Wed Mar 16 18:51:54 2016 MANAGEMENT: CMD 'client-auth 7 0'"
2016-03-16 19:51:55+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:51:55 2016 user/xx.xx.202.70:36746 Options error: bad comp option: snappy'
2016-03-16 19:51:55+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:51:55 2016 user/xx.xx.202.70:36746 OPTIONS IMPORT: compression parms modified'
2016-03-16 19:51:55+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:51:55 2016 user/xx.xx.202.70:36746 MULTI: Learn: 10.0.0.2 -> user/xx.xx.202.70:36746'
2016-03-16 19:51:55+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:51:55 2016 user/xx.xx.202.70:36746 MULTI: primary virtual IP for user/xx.xx.202.70:36746: 10.0.0.2'
2016-03-16 19:51:57+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:51:57 2016 user/xx.xx.202.70:36746 send_push_reply(): safe_cap=940'
2016-03-16 19:52:09+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:09 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:12+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:12 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:12+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:12 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:15+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:15 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:15+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:15 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:16+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:16 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:17+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:17 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:17+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:17 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:20+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:20 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:20+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:20 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:21+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:21 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:22+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:22 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:22+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:22 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:25+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:25 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:25+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:25 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:26+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:26 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:27+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:27 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:27+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:27 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:30+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:30 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:30+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:30 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:31+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:31 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:32+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:32 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:32+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:32 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'
2016-03-16 19:52:35+0100 [-] OVPN 0 OUT: 'Wed Mar 16 18:52:35 2016 user/xx.xx.202.70:36746 Bad compression stub decompression header byte: 251'