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[Suggestion] Set setoption41 105 as default when wemo/hue emulation is active #11367
Description
Hello,
I have several issues with Alexa not working sometimes (related with #10430 ) and 2 actions solved my problem after several tests:
- Allow IGMP snooping in my LAN
- Set option "setoption41 105" for gratuitous ARP every 5 minutes
Not every router has the IGPM option, and I had this problem on my parents house too. Then, "setoption41 105" fixed the issue.
I suggest to put option "setoption41 105" as default when wemo/hue emulation is active to prevent this problem. Any problem to to it?
Thanks
Activity
close-issue-app commentedon Mar 17, 2021
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raphamotta commentedon Mar 17, 2021
Where can I suggest it?
Jason2866 commentedon Mar 17, 2021
In discussions. But this is not a solution for a Multicast problem.
Setoption 41 is a workaround for routers which has not correctly implemented ARP treatment.
This issue is a general problem and affects all Tasmota functions.
raphamotta commentedon Mar 17, 2021
Well, if it's a workaround to some routers, why not to keep it by default?
jaymemaurice commentedon Mar 17, 2021
Please don't. Don't encourage fixing some broken networking devices by shipping default broken network protocols.
I personally don't want ARP broadcasts from all of my Tasmota devices waking up all the devices on my network because someone else's junk router/switch can't handle IGMP or keep it's ARP state. If we didn't want our switches to be switches, we'd still buy hubs.
Jason2866 commentedon Mar 17, 2021
Thats why Setoption41 is off by default. This will not be changed.
suzsuzuki commentedon Jan 8, 2023
Well... the default value of setoption41 is 60 for a while. Never say never..
rockbruno commentedon Apr 21, 2025
I found this thread after seeing tasmota spamming my network for no reason and trying to find out why. Am also surprised they made this a default... In any case, thankfully you can disable it with
SetOption41 0s-hadinger commentedon Apr 22, 2025
Sending one ARP packet every 105 seconds hardly qualifies for "spamming". Sending gratuitous ARP seemed to solve some multicast problems.