DTLS handshake failed: Error in the push function.(Open connect in Yosemite OS X 10.10.4)

[Maloy Ghosh]

Hi,
I want to connect to cisco-compatible anyconnect vpn from Yosemite OSX
10.10.4. I installed openconnect using  "brew install openconnect”.
When I connect to the vpn server using

sudo openconnect -v —user=<uname> 196.1.111.161

The following happens
POST https://196.1.111.161/
Attempting to connect to server 196.1.111.161:443
SSL negotiation with 196.1.111.161
Server certificate verify failed: signer not found

Certificate from VPN server "196.1.111.161" failed verification.
Reason: signer not found
Enter 'yes' to accept, 'no' to abort; anything else to view: yes
Connected to HTTPS on 196.1.111.161
XML POST enabled
Please enter your username and password.
GROUP: [testanyconnect-VPN]:testanyconnect-VPN
POST https://196.1.111.161/
XML POST enabled
Please enter your username and password.
Password:
POST https://196.1.111.161/
Got CONNECT response: HTTP/1.1 200 OK
CSTP connected. DPD 30, Keepalive 20
add host 196.1.111.161: gateway 192.168.1.1
add net 172.30.16.0: gateway 172.30.16.232
add net 196.1.106.0: gateway 172.30.16.232
add net 192.168.102.0: gateway 172.30.16.232
add net 192.168.2.0: gateway 172.30.16.232
add net 192.168.103.0: gateway 172.30.16.232
add net 192.168.105.0: gateway 172.30.16.232
add net 196.1.105.0: gateway 172.30.16.232
add net 196.1.105.47: gateway 172.30.16.232
add net default: gateway 2407:9a00:1:700::1
Connected utun0 as 172.30.16.232 + 2407:9a00:1:700::1/64, using SSL
DTLS handshake failed: Error in the push function.
(Is a firewall preventing you from sending UDP packets?)
^CSend BYE packet: Aborted by caller
delete net default: gateway 2407:9a00:1:700::1
delete host 196.1.111.161: gateway 192.168.1.1

link#10
ifconfig: ioctl (SIOCAIFADDR): Destination address required
ifconfig: del: bad value
User cancelled (SIGINT); exiting.



I am a novice in OS X but quite competent in linux based system. What
I am missing here? Please ask if you need more information.
Openconnect version: v7.06

Regards,

-- 
--
Maloy Ghosh
Research Engineer
Next Generation Network (NGN)
Center for Development of Telematics (CDoT)