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This concern applies to BGP additional-path diversity in a different scenario where operators need to share more than one eligible path for a single prefix with supporting peers. For the deployed BGP IPv6 address family approach, the relevant caution is instead that IPv6 next-hop reachability must be valid even if TCP uses IPv4.

This concern applies to OSPFv3 IPv6 routing in a different scenario where operators need to exchange IPv6 prefixes using the appropriate OSPF protocol version. For the deployed BGP IPv6 address family approach, the relevant caution is instead that IPv6 next-hop reachability must be valid even if TCP uses IPv4.

This concern applies to BGP next-hop resolution failure in a different scenario where operators need to diagnose a valid BGP route absent from the forwarding RIB. For the deployed BGP IPv6 address family approach, the relevant caution is instead that IPv6 next-hop reachability must be valid even if TCP uses IPv4.

BGP route reflector scale instead addresses a different condition: avoid a full mesh of iBGP peer sessions across a large provider AS. It would instead require you to designate route reflectors and client sessions with suitable cluster identity, not the stated goal to advertise a local prefix only when a matching route exists in the local table.

graceful restart helper coordination instead addresses a different condition: allow a neighbor's control-plane restart without immediately invalidating forwarding. It would instead require you to configure compatible graceful restart roles and bounded stale-route timers, not the stated goal to advertise a local prefix only when a matching route exists in the local table.

IS-IS adjacency MTU consistency instead addresses a different condition: restore an IS-IS neighbor relationship failing due to mismatched interface MTUs. It would instead require you to align supported MTU and adjacency parameters on both connected interfaces, not the stated goal to advertise a local prefix only when a matching route exists in the local table.

The proposed step is for BGP route reflector scale, whose purpose is to avoid a full mesh of iBGP peer sessions across a large provider AS. It would not perform the necessary BGP network statement origination operation: configure BGP network origination for an exact eligible route.

The proposed step is for graceful restart helper coordination, whose purpose is to allow a neighbor's control-plane restart without immediately invalidating forwarding. It would not perform the necessary BGP network statement origination operation: configure BGP network origination for an exact eligible route.

The proposed step is for IS-IS adjacency MTU consistency, whose purpose is to restore an IS-IS neighbor relationship failing due to mismatched interface MTUs. It would not perform the necessary BGP network statement origination operation: configure BGP network origination for an exact eligible route.

The observation would verify BGP route reflector scale under the separate requirement to avoid a full mesh of iBGP peer sessions across a large provider AS. It does not demonstrate the needed BGP network statement origination result: the BGP table contains a locally originated path for the intended prefix.

The observation would verify graceful restart helper coordination under the separate requirement to allow a neighbor's control-plane restart without immediately invalidating forwarding. It does not demonstrate the needed BGP network statement origination result: the BGP table contains a locally originated path for the intended prefix.

The observation would verify IS-IS adjacency MTU consistency under the separate requirement to restore an IS-IS neighbor relationship failing due to mismatched interface MTUs. It does not demonstrate the needed BGP network statement origination result: the BGP table contains a locally originated path for the intended prefix.

This defect belongs to BGP route reflector scale, where the affected outcome is to avoid a full mesh of iBGP peer sessions across a large provider AS. It is not the direct failure mode identified for the BGP network statement origination design in this case: a network statement is entered but no matching route exists to originate.

This defect belongs to graceful restart helper coordination, where the affected outcome is to allow a neighbor's control-plane restart without immediately invalidating forwarding. It is not the direct failure mode identified for the BGP network statement origination design in this case: a network statement is entered but no matching route exists to originate.

This defect belongs to IS-IS adjacency MTU consistency, where the affected outcome is to restore an IS-IS neighbor relationship failing due to mismatched interface MTUs. It is not the direct failure mode identified for the BGP network statement origination design in this case: a network statement is entered but no matching route exists to originate.

This concern applies to BGP route reflector scale in a different scenario where operators need to avoid a full mesh of iBGP peer sessions across a large provider AS. For the deployed BGP network statement origination approach, the relevant caution is instead that a lost underlying route can withdraw the BGP advertisement.

This concern applies to graceful restart helper coordination in a different scenario where operators need to allow a neighbor's control-plane restart without immediately invalidating forwarding. For the deployed BGP network statement origination approach, the relevant caution is instead that a lost underlying route can withdraw the BGP advertisement.

This concern applies to IS-IS adjacency MTU consistency in a different scenario where operators need to restore an IS-IS neighbor relationship failing due to mismatched interface MTUs. For the deployed BGP network statement origination approach, the relevant caution is instead that a lost underlying route can withdraw the BGP advertisement.

BGP iBGP multipath forwarding instead addresses a different condition: load-share among eligible equal-cost BGP routes instead of only one best path. It would instead require you to enable supported BGP multipath behavior within compatible path constraints, not the stated goal to repair iBGP route reception when the external next hop cannot be resolved internally.

OSPF area mismatch diagnosis instead addresses a different condition: recover adjacency on a link whose routers are configured in different areas. It would instead require you to place both sides in the intended matching OSPF area, not the stated goal to repair iBGP route reception when the external next hop cannot be resolved internally.

IS-IS single-topology coexistence instead addresses a different condition: run IPv4 and IPv6 under a common IS-IS topology when links support both. It would instead require you to configure the appropriate single-topology address-family behavior consistently, not the stated goal to repair iBGP route reception when the external next hop cannot be resolved internally.

The proposed step is for BGP iBGP multipath forwarding, whose purpose is to load-share among eligible equal-cost BGP routes instead of only one best path. It would not perform the necessary BGP next-hop-self internal reachability operation: set the correct next-hop attribute on the iBGP advertisement boundary.

The proposed step is for OSPF area mismatch diagnosis, whose purpose is to recover adjacency on a link whose routers are configured in different areas. It would not perform the necessary BGP next-hop-self internal reachability operation: set the correct next-hop attribute on the iBGP advertisement boundary.

The proposed step is for IS-IS single-topology coexistence, whose purpose is to run IPv4 and IPv6 under a common IS-IS topology when links support both. It would not perform the necessary BGP next-hop-self internal reachability operation: set the correct next-hop attribute on the iBGP advertisement boundary.

The observation would verify BGP iBGP multipath forwarding under the separate requirement to load-share among eligible equal-cost BGP routes instead of only one best path. It does not demonstrate the needed BGP next-hop-self internal reachability result: internal peers install the route using a reachable provider next hop.

The observation would verify OSPF area mismatch diagnosis under the separate requirement to recover adjacency on a link whose routers are configured in different areas. It does not demonstrate the needed BGP next-hop-self internal reachability result: internal peers install the route using a reachable provider next hop.

The observation would verify IS-IS single-topology coexistence under the separate requirement to run IPv4 and IPv6 under a common IS-IS topology when links support both. It does not demonstrate the needed BGP next-hop-self internal reachability result: internal peers install the route using a reachable provider next hop.

This defect belongs to BGP iBGP multipath forwarding, where the affected outcome is to load-share among eligible equal-cost BGP routes instead of only one best path. It is not the direct failure mode identified for the BGP next-hop-self internal reachability design in this case: the original eBGP next hop remains unreachable inside the provider core.

This defect belongs to OSPF area mismatch diagnosis, where the affected outcome is to recover adjacency on a link whose routers are configured in different areas. It is not the direct failure mode identified for the BGP next-hop-self internal reachability design in this case: the original eBGP next hop remains unreachable inside the provider core.

This defect belongs to IS-IS single-topology coexistence, where the affected outcome is to run IPv4 and IPv6 under a common IS-IS topology when links support both. It is not the direct failure mode identified for the BGP next-hop-self internal reachability design in this case: the original eBGP next hop remains unreachable inside the provider core.

This concern applies to BGP iBGP multipath forwarding in a different scenario where operators need to load-share among eligible equal-cost BGP routes instead of only one best path. For the deployed BGP next-hop-self internal reachability approach, the relevant caution is instead that the chosen next hop must itself be redundantly reachable by the IGP.

This concern applies to OSPF area mismatch diagnosis in a different scenario where operators need to recover adjacency on a link whose routers are configured in different areas. For the deployed BGP next-hop-self internal reachability approach, the relevant caution is instead that the chosen next hop must itself be redundantly reachable by the IGP.

This concern applies to IS-IS single-topology coexistence in a different scenario where operators need to run IPv4 and IPv6 under a common IS-IS topology when links support both. For the deployed BGP next-hop-self internal reachability approach, the relevant caution is instead that the chosen next hop must itself be redundantly reachable by the IGP.