Update README.md

README.md

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-# ietf-ccamp-layer0-types-v2
-CCAMP WG repository for ietf-ccamp-layer0-types-v2.
-This is the working area for the [IETF CCAMP WG](https://datatracker.ietf.org/wg/ccamp/documents/) ietf-ccamp-layer0-types-v2, which is the revision 2 [ietf-ccamp-layer0-types](https://github.com/ietf-ccamp-wg/draft-ietf-ccamp-layer0-types).
+# ietf-layer0-types-ext
+CCAMP WG repository for ietf-layer0-types-ext.
+This is the working area for the [IETF CCAMP WG](https://datatracker.ietf.org/wg/ccamp/documents/) ietf-layer0-types-ext YANG module, which is the starting point for revision 2 of [ietf-layer0-types](https://github.com/ietf-ccamp-wg/draft-ietf-ccamp-layer0-types). When the initial version of the YANG module ietf-layer0-types will have been published as RFC, ietf-ccamp-layer0-types-ext will be renamed to ietf-ccamp-layer0-types.
 
-**Note**: an Internet-Draft for ietf-ccamp-layer0-types-v2 is still pending.
+**Note**: an Internet-Draft for ietf-layer0-types-ext is still pending.
 
 ## Branches
-* **carry-over-ietf-ccamp-layer0-types**: this temporary branch is used for the material that was removed from ietf-layer0-types when it's scope was reduced to spectrum management only.
+* **carry-over-ietf-layer0-types**: this temporary branch is used for the material that was removed from ietf-layer0-types when it's scope was reduced to spectrum management only.
 * **transponder-model-types**: this temporary branch will be used for developing type defs and groupings that are used in various YANG models that include optical transponders (e.g.: [draft-ietf-ccamp-dwdm-if-param-yang](https://github.com/ietf-ccamp-wg/draft-ietf-ccamp-dwdm-if-param-yang), [draft-ietf-ccamp-optical-impairment-topology-yang](https://github.com/ietf-ccamp-wg/draft-ietf-ccamp-optical-impairment-topology-yang), etc.) 
 
-Material from the two branches above will ber merged into ietf-ccamp-layer0-types-v2.yang (to be created) on the master branch.
+Material from the two branches above will ber merged into ietf-layer0-types-ext.yang (to be created) on the master branch.
 
 ## Contributing