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This fix is partially based on comment https://github.com/docker/docker/issues/30242#issuecomment-273517205 Currently, `docker network inspect` relies on `FindNetwork()` which does not take into consideration that multiple networks with the same name might exist. This fix propose to return `docker network inspect` in a similiar fashion like other commands: 1. Lookup full ID 2. Lookup full name 3. Lookup partial ID If multiple networks exist, an error will be returned. NOTE: this fix is not a complete fix for the issue raised in https://github.com/docker/docker/issues/30242#issuecomment-273517205 where SwarmKit is unable to update when multiple networks with the same name exit. To fix that issue requires multiple places when `FindNetwork()` is called. Because of the impact of changing `FindNetwork()`, this fix focus on the issue in `docker network inspect`. A separate PR will be created to address https://github.com/docker/docker/issues/30242#issuecomment-273517205 An integration test has been added. Signed-off-by: Yong Tang <yong.tang.github@outlook.com> Upstream-commit: abf31ee0837ff80638f10b77df9025b6b6470253 Component: engine