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31 lines
978 B
ReStructuredText
31 lines
978 B
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mDNS Repeater
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-------------
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Starting with VyOS 1.2 a `Multicast DNS`_ (mDNS) repeater functionality is
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provided.
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Multicast DNS uses the 224.0.0.51 address, which is "administratively scoped"
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and does not leave the subnet. It re-broadcast mDNS packets from one interface
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to other interfaces. This enables support for e.g. Apple Airplay devices across
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multiple VLANs.
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To enable mDNS repeater you need to configure at least two interfaces. To re-
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broadcast all mDNS packets from `eth0` to `eth1` and vice versa run:
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.. code-block:: sh
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set service mdns repeater interface eth0
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set service mdns repeater interface eth1
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mDNS repeater can be temporarily disabled without deleting the service using
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.. code-block:: sh
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set service mdns repeater disable
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.. note:: You can not run this in a VRRP setup, if multiple mDNS repeaters
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are launched in a subnet you will experience the mDNS packet storm death!
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.. _`Multicast DNS`: https://en.wikipedia.org/wiki/Multicast_DNS
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