Comment 0 for bug 1072328

VPN Connection is set back when larger amounts are being transferred - in my case when I execute an rsync script.

in
OpenConnect version v4.06
Using GnuTLS. Features present: PKCS#11, DTLS (using OpenSSL)

from /var/log/syslog:
Oct 28 12:09:22 buckeliger NetworkManager[1227]: <info> No IPv6 configuration
Oct 28 12:09:22 buckeliger NetworkManager[1227]: <info> Login Banner:
Oct 28 12:09:22 buckeliger NetworkManager[1227]: <info> -----------------------------------------
Oct 28 12:09:22 buckeliger NetworkManager[1227]: <info> /////////
Oct 28 12:09:22 buckeliger NetworkManager[1227]: <info> -----------------------------------------
Oct 28 12:09:22 buckeliger openconnect[2705]: Connected vpn0 as 138.232.7.97, using SSL
Oct 28 12:09:23 buckeliger NetworkManager[1227]: <info> VPN connection '****' (IP Config Get) complete.
Oct 28 12:09:23 buckeliger NetworkManager[1227]: <info> Policy set '****' (vpn0) as default for IPv4 routing and DNS.
Oct 28 12:09:23 buckeliger NetworkManager[1227]: <info> ((null)): writing resolv.conf to /sbin/resolvconf
Oct 28 12:09:23 buckeliger dnsmasq[1398]: setting upstream servers from DBus
Oct 28 12:09:23 buckeliger dnsmasq[1398]: using nameserver ****
Oct 28 12:09:23 buckeliger dnsmasq[1398]: using nameserver ****
Oct 28 12:09:24 buckeliger NetworkManager[1227]: <info> VPN plugin state changed: started (4)
Oct 28 12:09:24 buckeliger dbus[1064]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Oct 28 12:09:24 buckeliger NetworkManager[1227]: keyfile: updating /etc/NetworkManager/system-connections/****
Oct 28 12:09:24 buckeliger dbus[1064]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Oct 28 12:09:28 buckeliger openconnect[2705]: DTLS handshake failed: 2
Oct 28 12:09:32 buckeliger ntpdate[2806]: adjust time server 91.189.94.4 offset 0.087904 sec
Oct 28 12:09:46 buckeliger openconnect[2705]: SSL wrote too few bytes! Asked for 1363, sent 0
Oct 28 12:09:46 buckeliger openconnect[2705]: Send BYE packet: Internal error
Oct 28 12:09:46 buckeliger avahi-daemon[1169]: Withdrawing workstation service for vpn0.
Oct 28 12:09:46 buckeliger NetworkManager[1227]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/vpn0, iface: vpn0)
Oct 28 12:09:47 buckeliger NetworkManager[1227]: <warn> VPN plugin failed: 1
Oct 28 12:09:47 buckeliger NetworkManager[1227]: <info> VPN plugin state changed: stopped (6)
Oct 28 12:09:47 buckeliger NetworkManager[1227]: <info> VPN plugin state change reason: 0
Oct 28 12:09:47 buckeliger avahi-daemon[1169]: Withdrawing address record for 192.168.178.20 on eth0.
Oct 28 12:09:47 buckeliger avahi-daemon[1169]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.178.20.
Oct 28 12:09:47 buckeliger avahi-daemon[1169]: Interface eth0.IPv4 no longer relevant for mDNS.
Oct 28 12:09:47 buckeliger avahi-daemon[1169]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.178.20.
Oct 28 12:09:47 buckeliger avahi-daemon[1169]: New relevant interface eth0.IPv4 for mDNS.
Oct 28 12:09:47 buckeliger avahi-daemon[1169]: Registering new address record for 192.168.178.20 on eth0.IPv4.
Oct 28 12:09:48 buckeliger NetworkManager[1227]: <info> Policy set 'dahoam' (eth0) as default for IPv4 routing and DNS.