{ pkgs, ... }: { boot.loader.grub = { enable = true; device = "/dev/sda"; configurationLimit = 10; }; boot.kernelPackages = pkgs.linuxPackages_latest; boot.kernelModules = [ "tcp_bbr" ]; boot.kernel.sysctl = { "net.core.default_qdisc" = "fq"; "net.ipv4.tcp_congestion_control" = "bbr"; }; }