Enabling OSPFv3 MANET extensions over IPv4 encryptors

Extensions for OSPF in a mobile ad-hoc environment have been developed by the OSPF IETF working group. These extensions are emerging as effective routing solutions for tactical edge networks. However, these extensions have been designed and implemented for IPv6 routing, namely OSPFv3, so OSPFv3 is not directly applicable to IPv4 networks. Fortunately, the OSPF working group has also proposed an address family extension which allows OSPFv3 to operate in IPv4 networks. The address family extension assumes that the physical interface supports both IPv4 and IPv6 natively. Nevertheless, this assumption is not valid for the security tunneling interfaces across some IP encryptors. In this paper, we propose a novel solution which enables OSPFv3 MANET extensions to operate over various IP encryptors. Our approach is a modular approach and leverages widely deployed automatic tunneling mechanism, i.e., ISATAP (intra-site automatic tunnel addressing protocol). We demonstrate that our approach can provide a unified routing solution for both IPv4 and IPv6 across various IP encryptors. In this paper, we propose a novel solution which enables OSPFv3 MANET extensions to operate over various IP encryptors. Our approach is a modular approach and leverages widely deployed automatic tunneling mechanism, i.e., ISATAP (intra-site automatic tunnel addressing protocol). We demonstrate that our approach can provide a unified routing solution for both IPv4 and IPv6 across various IP encryptors.