maybe this is easier, i delted the vpn and did this. but didnt help either, i have set the firewall rules for local.
ubnt# set vpn ipsec ipsec-interfaces interface eth0 ubnt# set vpn ipsec nat-networks allowed-network 129.168.1.0/24 ubnt# set vpn ipsec nat-traversal enable ubnt# set vpn l2tp remote-access authentication mode local ubnt# set vpn l2tp remote-access authentication local-users username ****** password ****** ubnt# set vpn l2tp remote-access client-ip-pool start 192.168.1.200 ubnt# set vpn l2tp remote-access client-ip-pool stop 192.168.1.209 ubnt# set vpn l2tp remote-access dns-servers server-1 8.8.8.8 ubnt# set vpn l2tp remote-access dns-servers server-2 8.8.4.4 ubnt# set vpn l2tp remote-access ipsec-settings authentication mode pre-shared-secret ubnt# set vpn l2tp remote-access ipsec-settings authentication pre-shared-secret ******** ubnt# set vpn l2tp remote-access ipsec-settings ike-lifetime 3600 ubnt# set vpn l2tp remote-access dhcp-interface eth0 ubnt# commit