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1What: /sys/class/net/<iface>/dsa/tagging2Date: August 20183KernelVersion: 4.204Contact: netdev@vger.kernel.org5Description:6 On read, this file returns a string indicating the type of7 tagging protocol used by the DSA network devices that are8 attached to this master interface.9 On write, this file changes the tagging protocol of the10 attached DSA switches, if this operation is supported by the11 driver. Changing the tagging protocol must be done with the DSA12 interfaces and the master interface all administratively down.13 See the "name" field of each registered struct dsa_device_ops14 for a list of valid values.15