you can check 
https://github.com/sipwise/rtpengine/issues/1035

On Fri, Oct 29, 2021 at 11:42 AM keffa@alcall.net <keffa@alcall.net> wrote:
Hello @everyone

Please can you explain me how this message is errors or not ?

«  Oct 29 08:34:44 ip76 rtpengine[649]: WARNING: [YGiXZ1MmIA port 30104]: [ice] Priority collision between candidate pairs 9oZd7sWNVguf6cgl:e4b19f6635447b850 »

thank
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