netkernelconf

Documentation

Overview

Package netkernelconf contains code for checking kernel netdev config.

Index

• func CheckUDPGROForwarding(tunInterface, defaultRouteInterface string) (warn, err error)
• func SetUDPGROForwarding(tunInterface, defaultInterface string) error

Functions

func CheckUDPGROForwarding

func CheckUDPGROForwarding(tunInterface, defaultRouteInterface string) (warn, err error)

CheckUDPGROForwarding checks if the machine is optimally configured to forward UDP packets between the default route and Tailscale TUN interfaces. It returns a non-nil warn in the case that the configuration is suboptimal. It returns a non-nil err in the case that an error is encountered while performing the check.

func SetUDPGROForwarding

func SetUDPGROForwarding(tunInterface, defaultInterface string) error

SetUDPGROForwarding enables UDP GRO forwarding for the provided default interface. It validates if the provided tun interface has UDP segmentation enabled and, if not, returns an error. See https://tailscale.com/kb/1320/performance-best-practices#linux-optimizations-for-subnet-routers-and-exit-nodes