At 23:38 I turned off the TV and ten minutes later noticed the internet wasn't working for a minute. I have another simple example of this TCP Retransmission flooding - I was watching Netflix on an LG TV that is wired to my switch. Retransmitted TCP segment data (31 bytes) Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps Sequence number: 1 (relative sequence number)Īcknowledgment number: 1 (relative ack number) Transmission Control Protocol, Src Port: 443, Dst Port: 50582, Seq: 1, Ack: 1, Len: 31
Is this a bug with the pfSense network stack or could it be a problem with the Asus AiMesh wireless access points?įrame 220835: 97 bytes on wire (776 bits), 97 bytes captured (776 bits) on interface \Device\NPF_, id 0Įthernet II, Src: FujitsuT_25:5b:24 (90:1b:0e:25:5b:24), Dst: LGInnote_b1:3b:2c (20:3d:bd:b1:3b:2c)ĭestination: LGInnote_b1:3b:2c (20:3d:bd:b1:3b:2c) I have tried changing the Intel network card and reinstalled pfSense (currently running latest 2.4.5-p1). 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.
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