Function setVethNetNS

tailnet/test/integration/network.go:707–719

setVethNetNS moves the veth interface to the specified network namespace.

(vethName string, netNSFd int)

// setVethNetNS moves the veth interface to the specified network namespace.
func setVethNetNS(vethName string, netNSFd int) error {
	veth, err := netlink.LinkByName(vethName)
	if err != nil {
		return xerrors.Errorf("LinkByName(%q): %w", vethName, err)
	}

	err = netlink.LinkSetNsFd(veth, netNSFd)
	if err != nil {
		return xerrors.Errorf("LinkSetNsFd(%q, %v): %w", vethName, netNSFd, err)
	}

	return nil
}

// setInterfaceIP sets the IP address on the given interface. It automatically
// adds a /24 subnet mask.