Hello I had a problem with a discord server today. One of our coworker wanted to use discord for business meetings. While Chat was possible voice and video wasn't. I looked at the tracefile with the syntax "frame contains discord" and i found some TCP 443 and DNS queries. I looked at every TCP stream and i found no issues with it. I googled a little bit and found the information that discord is using udp for voice and video so i checked our firewall and obviously everything else then TCP 80 and 443 was blocked. But what makes me wonder is why no icmp destination unreachable was found in the trace. I thought when a UDP connection fails that a icmp destination unreachable packet is sent but i didn't find any icmp packets except 2 from a workstation which tried to ping my client at the same time like i did a capture. Wireshark UDP PCAP File
