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| -rw-r--r-- | docs/services/mdns-repeater.rst | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/docs/services/mdns-repeater.rst b/docs/services/mdns-repeater.rst index 22e824ba..4664ee84 100644 --- a/docs/services/mdns-repeater.rst +++ b/docs/services/mdns-repeater.rst @@ -9,22 +9,25 @@ and does not leave the subnet. It re-broadcast mDNS packets from one interface to other interfaces. This enables support for e.g. Apple Airplay devices across multiple VLANs. +Since the mDNS protocol sends the AA records in the packet itself, the repeater +does not need to forge the source address. Instead, the source address is of +the interface that repeats the packet. + +.. cfgcmd:: set service mdns repeater interface <interface> + To enable mDNS repeater you need to configure at least two interfaces. To re- broadcast all mDNS packets from `eth0` to `eth1` and vice versa run: .. code-block:: none - set service mdns repeater interface eth0 - set service mdns repeater interface eth1 + set service mdns repeater interface 'eth0' + set service mdns repeater interface 'eth1' -mDNS repeater can be temporarily disabled without deleting the service using +.. cfgcmd:: set service mdns repeater disable -.. code-block:: none - - set service mdns repeater disable +mDNS repeater can be temporarily disabled without deleting the service using .. note:: You can not run this in a VRRP setup, if multiple mDNS repeaters are launched in a subnet you will experience the mDNS packet storm death! - .. _`Multicast DNS`: https://en.wikipedia.org/wiki/Multicast_DNS |