I wouldn't have asked this here, but I am at wit's end, this makes absolutely no sense at this point. I have been trying everything. I have a single iptables rule:
-A POSTROUTING -o eth0 -j MASQUERADE
Where eth0 is my WAN connection going to my cable modem. All other connectivity appears fine, 110/12mbps testing to the internet using whatever speedtest site. 900mbps iperf to the router.
The only change from the netflix app running on my vizio tv working to not working was a change from a Netgear R7000 router to a linux based (debian 8) router. Everything is ethernet. If I plug the tv straight into the cable modem it works fine as well.
Setting the DNS on the TV statically, but still taking a DHCP lease off the debian box still makes it fail.
Always the error is ui-113
Once I Swapped hardware, reinstalled debian. It worked for a short while. Then it went back to same behavior. Absolutely no idea what it could be at this point. Has anyone ever seen this?
答案1
I found my answer thanks to this good sir
The key being
iptables -I INPUT -m state --state INVALID -j DROP
As seen in the linked post the sending web server was sending packets over-sequence.
I hope this helps someone else.