L2TP VPN re-connection issue in Vyatta

I have L2TP VPN configured in Vyatta Subscription Edition 6.5 R2
If I get disconnected from VPN, I am unable to reconnect to the VPN.

# sh vpn

 ipsec {
     ipsec-interfaces {
         interface eth4
     }
     nat-networks {
         allowed-network 0.0.0.0/0 {
         }
     }
     nat-traversal enable
 }
 l2tp {
     remote-access {
         authentication {
             local-users {
                 username abcd{
                     password abcdVPN!
                 }
             }
             mode local
         }
         client-ip-pool {
             start 10.20.30.40
             stop 10.20.30.140
         }
         description ravpn
         dns-servers {
             server-1 192.168.2.13
                      }
         ipsec-settings {
             authentication {
                 mode pre-shared-secret
                 pre-shared-secret abcdVPN2014
             }
             ike-lifetime 3600
         }
         outside-address  a.b.c.1
         outside-nexthop a.b.c.1
     }
 }
[edit]

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Is there any timeout or DPD setting that I can configure to fix the issue

Any suggestion will be great help.

Thank you,
LVL 11
MiftaulAsked:
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MiftaulAuthor Commented:
I am still working with vyatta support team to resolve the issue. They advised me to do a firmware update.
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