privsep_interface_linkmtu(const char *iface, uint32_t mtu)
{
	struct privsep_command cmd;
	cmd.type = SET_INTERFACE_LINKMTU;
	strncpy(cmd.iface, iface, sizeof(cmd.iface));
	cmd.val = mtu;

	if (writen(pfd, &cmd, sizeof(cmd)) != sizeof(cmd))
		return (-1);
	return 0;
}
Unknown