Hi, I'm running into an issue where nftables drops all related traffic, even if it should accept it. When using, for example, an [archwiki example nftables ruleset][1] it contains the line `ct state established,related accept`. This is supposed to accept related and established traffic. Established works: otherwise, I wouldn't be able to browse the web! Related however, doesn't appear to work. My proof is my TFTP server: if you [look at the protocol][2], its a simple example of related traffic. However, it only works when my firewall is disabled. TCPdumping the server shows that my server sends the data packet, but never receives an ACK. ([wiki example][2] image R2/R3) Any help would be greatly appreciated! [1]: https://wiki.archlinux.org/index.php/Nftables#Workstation [2]: https://en.wikipedia.org/wiki/Trivial_File_Transfer_Protocol#Details
