Comments (3)
That is indeed quite tricky, especially when AirPlay is involved, since to reduce the amount of discovery traffic on the network a device will build it's own passive cache of what it thinks is available, based on what it sees when other devices do discovery. Theoretically one could forge ethernet packets look like multicast IP but are actually unicast ethernet, that only go to the device that you want to be able to see things, but that is also fraught since other devices will still see the request, and if they themselves don't see a response then they'll delete what they no longer believe is available from their own cache.
The upshot is that you end up with all sorts of issues where devices come and go, seemingly at random.
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Hi @alsmith . Thank you for your response. I'm kindly ask you if you can contact me by email, I have more questions that require detailed explanation that I cannot disclose publicly. Thank you in advance.
from multicast-relay.
Hi again. One thing that I've noticed durig my setup is that I don't see SSDP packets in replication. My setup is Ubuntu 20.04 server on esxi with two physical interfaces, but mDNS works as it should. Is tehre anything extra to setup it? Thank you in advance.
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Related Issues (20)
- Proxy SSDP HOT 1
- noTransmitInterfaces, ifFilter… Confusion HOT 8
- Debian 11 compatibility HOT 1
- Multiple Networks? HOT 45
- 'relay' option doesn't capture UPD packets HOT 1
- Android client can't see Chromecast Speaker Groups HOT 3
- Devices from Excluded VLANs Show Up in Logs HOT 8
- set REMOTE_HOST to a subnet? HOT 7
- Breaking update for --listen HOT 2
- Issues with mDNS and Airplay devices HOT 5
- Not all broadcast addresses are accepted
- --ifFilter HOT 2
- Help for anyone moving to UDM Pro v2.4.23 HOT 23
- OpenWRT and python3 HOT 4
- Devices not discoverable HOT 1
- Any Chance to add Wake On Lan? HOT 1
- latest commit broken HOT 1
- /healthz healthcheck endpoint HOT 1
- Usage on windows HOT 1
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