Luc has a proposal prepared in MS Word format. Will copy here as best I can, but will rely upon him to link the document and present during Interop SC call during WD02 timeframe.

Rough copy:
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B.2.10 tosca.nodes.Network
The TOSCA Network node represents a simple, logical network service. Represents an isolated L2 segment, analogous to VLAN in the physical networking world.

B.2.10.2 Definition
tosca.nodes.Network:
derived_from: tosca.nodes.Root
properties:

1. TBD
   requirements:
2. TBD

B.2.11 tosca.nodes.SubNet
A block of v4 or v6 IP addresses and associated configuration state.

B.2.11.2 Definition
tosca.nodes.SubNet:
derived_from: tosca.nodes.Root
properties:

1. TBD
   requirements:
2. TBD

B.2.12 tosca.nodes.Gateway
Represents an Internet gateway that can be attached to a tosca.nodes.Network node to provide internet access to the defined network.

B.2.12.2 Definition
tosca.nodes.SubNet:
derived_from: tosca.nodes.Root
properties:

1. TBD
   requirements:
2. TBD

B.2.13 tosca.nodes.Router
This base Node Type will be developed in future drafts of this specification

B.2.13.2 Definition
tosca.nodes.SubNet:
derived_from: tosca.nodes.Root
properties:

1. TBD
   requirements:
2. TBD

B.2.14 tosca.nodes.FloatingIp
Represents a floating IP that can be attached to a Compute node.

B.2.14.2 Definition
tosca.nodes.FloatingIp:
derived_from: tosca.nodes.Root
properties:

1. TBD
   requirements:
2. TBD