This is a bit of an odd one, but I've now observed it at least 3 times on my home network. Basically one of us will make an outgoing call and DNS lookups stop working. It's not every time, but I've now noticed it enough times that I'm pretty sure that's what's happening. Connectivity seems fine it's DNS lookups that seem to stop working and time out until the call ends (for example it just happened and I had a citrix session that remained completely responsive throughout, but all dns lookups failed until the call ended)Anybody have any suggestions on what might cause this? I'm running a Fritzbox as modem and ATA so wondering if there's a bug or something with their built in QoS for VOIP?
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