Openvpn suppress 172 address nating

[masser]

Hi.
Is there a way to suppress the 172 nating address over the openvpn as it is causing routing issues with VoIP phone sitting behind?

Ideally it would be great if the original ip could be presented for the VoIP phone (I.e. 192.168.1.199) at the other end.

When I run a packet sniff on the remote end (VoIP server) I can see the VoIP registration with a 172 address .

Disabling the SIP and h323 helper doesn't help and VoIP will not connect at all.



Here is example of what I'm seeing coming through the tunnel when inspecting the VoIP server..


RasRx: v=IFace=LAN1, Src=172.16.254.6:3000, Dst=192.168.0.4:1719, tos=0 peb=0

RasMessage = registrationRequest




Thanks