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The packet is going from the pfSense Fujitsu i350 LAN port 90:1b:0e:25:5b:24 to the LG TV 20:3d:bd:b1:3b:2c.

I have uploaded the Wireshark dump to and the problem first occurs at timecode 5499.551527.

The pfSense router is connected through a Netgear GS116Ev2 smart switch to a number of Asus RT-AC67U AiMesh wireless access points. I would expect only a few retransmission attempts not this huge number which causes internet timeouts as the LAN port is fully occupied - after a few minutes the flood stops and the internet is then available again. Samsung S9 phone leaving the house or an LG TV being switched off) I get a huge number (hundreds of thousands) of TCP Retransmission packets with the same sequence number going from my pfSense LAN port to the device. I have been running Wireshark and have observed that sometimes when a wireless device leaves the network (e.g. I wonder if someone can advise on a problem I've been having with TCP Retransmission packets flooding my LAN intermittently.