因为与磁带备份厂商Quantum商标冲突：
The OpenStack Foundation has changed the name of its networking project from Quantum to Neutron due to a trademark conflict with a manufacturer of tape-based data backup systems.
OpenStack reached a legal agreement with backup technology manufacturer Quantum Corp. earlier this year to stop using the term OpenStack Quantum, according to a message OpenStack Chief Operations Officer Mark Collier sent to one of the open source project's mailing lists last spring.
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