Comments (5)
kennylevinsen
commented on July 20, 2024
1
This is quite the wall of text. :/
A good starting point would be using wireshark to monitor both the source and destination subnets for the mdns broadcast that crashes your ChromeCast Audio—that is, the subnet that the broadcast originated on, and the subnet that mdns-repeater repeated it to. I don't have any devices that crash from bad mDNS packages, so you're a bit on your own with regards to finding the fault.
Note that mdns-repeater just blindly copies UDP packages targetting the mdns address from one interface to another. It forwards to all interfaces that have been specified by name on the command-line. That all interfaces are monitored is not a bug, it's just the current behavior. Easiest way to filter is using the blacklists.
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gjbadros
commented on July 20, 2024
Yes I think it's just the python-zeroconf that homeassistant embeds being
exposed back onto the whole subnet. I don't actually now think
mdns-repeater is mangling packets, it's just exposing the bad
python-zeroconf-generated mdns responses from homeassistant in a docker
container back onto the network where the Chromecast audios are dying.
Thanks for reading the wall :)
Greg
…On Thu, May 7, 2020, 3:18 PM Kenny Levinsen ***@***.***> wrote:
This is quite the wall of text. :/
A good starting point would be using wireshark to monitor both the source
and destination subnets for the mdns broadcast that crashes your ChromeCast
Audio—that is, the subnet that the broadcast originated on, and the subnet
that mdns-repeater repeated it to. I don't have any devices that crash from
bad mDNS packages, so you're a bit on your own with regards to finding the
fault.
Note that mdns-repeater just blindly copies UDP packages targetting the
mdns address from one interface to another. It does this between all
interfaces that have been *specified by name* on the command-line.
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sbeckeriv
commented on July 20, 2024
I have been running this in a docker on unraid to support my broken up network for chromecast ultra to stream plex. I have seen, often enough, that the audio for a stream for a video will not work. I thought it was an issue with chromecast to the speaker but this wall of text might also be my issue. unlike gjbadros i have just been restarting my chromecast and blaming sonos. I look forward to anything that comes out of this issue or to test any potential solutions.
Thanks again!
Becker
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kennylevinsen
commented on July 20, 2024
See python-zeroconf/python-zeroconf#245 and python-zeroconf/python-zeroconf#248.
Closing this as there were no mdns-repeater issues identified.
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gjbadros
commented on July 20, 2024
The fix was isolated to python-zeroconf so Stephen you're welcome to try
the latest version of that and see if it makes a difference. I suspect it
doesn't affect your scenario since the problem was about Google ChromeCast
Audio (CCAs not Ultras) having mdns announcement failures under certain
relatively unusual situations.
…On Mon, Jun 22, 2020 at 9:42 AM Stephen Becker IV ***@***.***> wrote:
I have been running this in a docker on unraid to support my broken up
network for chromecast ultra to stream plex. I have seen, often enough,
that the audio for a stream for a video will not work. I thought it was an
issue with chromecast to the speaker but this wall of text might also be my
issue. unlike gjbadros i have just been restarting my chromecast and
blaming sonos. I look forward to anything that comes out of this issue or
to test any potential solutions.
Thanks again!
Becker
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Related Issues (14)
- mdns-repeater does not set TTL to 255 HOT 2
- Unused argument `sig` in `mdns_repeater_shutdown` HOT 2
- Original code's url no longer valid at bitbucket HOT 6
- mDNS address is 224.0.0.251, not 224.0.0.51
- packets are rebroadcasted to the same vlan interface HOT 1
- Only works when debugging with -f HOT 1
- make - Mercurial issues (?) HOT 1
- asuswrt-merlin HOT 12
- Any plans for IPv6 support? HOT 1
- [feature request] whole 224.0.0.0/4 support HOT 3
- Blacklist interface HOT 1
- Permissive License HOT 2
- Running mdns-repeater as service in Debian HOT 2
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