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[Quantum] Why is 'subnet' introduced in Quantum API v2?
I am confused by the existence of both 'network' and 'subnet'. According to
v2 API spec, subnet is introduced to support IPAM capabilities. Can
anyone elaborate it to me? For example, what is the benefit of creating 1
network and 2 subnets by comparison with creating 2 networks that
implicitly has one and only one subnet for each?
I do know that the original network did not support IP overlapping before
subnet is introduced. But it is just an implementation issue, right?