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This draft is a work item of the Link State Routing WG of the IETF.

        Title           : H-bit Support for OSPFv2
        Authors         : Keyur Patel
                          Padma Pillay-Esnault
                          Manish Bhardwaj
                          Serpil Bayraktar
        Filename        : draft-ietf-ospf-ospfv2-hbit-06.txt
        Pages           : 8
        Date            : 2018-08-27

   OSPFv3 defines an option bit for router-LSAs known as the R-bit in
   RFC5340.  If the R-bit is clear, an OSPFv3 router can participate in
   OSPF topology flooding, however it will not be used as a transit
   router.  In such cases, other routers in the OSPFv3 routing domain
   only install routes to allow local traffic delivery.  This document
   defines the H-bit functionality to prevent other OSPFv2 routers from
   using the router for transit traffic in OSPFv2 routing domains as
   described in RFC 2328.  This document updates RFC 2328.

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