[netmod] question about unprefixed path in leafref

["Fengchong (frank)" <[e-mail]>]

Hi all,

In RFC7950 sec6.4.1 says:


o  Names without a namespace prefix belong to the same namespace as

      the identifier of the current node.  Inside a grouping, that

      namespace is affected by where the grouping is used (see

      Section 7.13<https://datatracker.ietf.org/doc/html/rfc7950#section-7.13>).  Inside a typedef, that namespace is affected by

      where the typedef is referenced.  If a typedef is defined and

      referenced within a grouping, the namespace is affected by where

      the grouping is used (see Section 7.13<https://datatracker.ietf.org/doc/html/rfc7950#section-7.13>).

But in module openconfig-aft-network-instance:

  augment "/oc-ni:network-instances/oc-ni:network-instance/" +
          "oc-ni:afts/oc-ni:next-hops/oc-ni:next-hop/oc-ni:state" {

    description
      "Add leaves that require referencing of a network instance to the
      operational state parameters of a next-hop within the AFT for IPv4
      unicast.";

    uses aft-nexthop-ni-state;
  }

  grouping aft-nexthop-ni-state {
    description
      "Operational state parameters relating to a next-hop which reference a
      network instance.";

    leaf network-instance {
      type oc-ni:network-instance-ref;
      description
        "The network-instance within which the next-hop should be resolved.
         When this leaf is unspecified, the next-hop is resolved within
         the local instance.";
    }
  }

The typedef network-instance-ref is defined in module openconfig-network-instance:

  typedef network-instance-ref {
    type leafref {
      path "/network-instances/network-instance/config/name";
    }
    description
      "A re-usable type that can be referenced within other
       modules that references a network instance.";
  }

The leafref’s path is a unprefixed path.

So, according RFC7950, the typedef network-instance-ref is referenced in leaf network-instance, and the leaf is inside grouping aft-nexthop-ni-state, and this grouping is used in augment "/oc-ni:network-instances/oc-ni:network-instance/" +
          "oc-ni:afts/oc-ni:next-hops/oc-ni:next-hop/oc-ni:state"
So the path "/network-instances/network-instance/config/name" ‘s namespace is module openconfig-aft-network-instance’s namespace. But in fact, there is no node called network-instances with namespace: http://openconfig.net/yang/aft/ni.

Is it incorrect?

I try to use pyang to compile it, and no error is reported.

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