Processing /etc/profile... Done                                                
                                                                                
# ls                                                                            
bin      init     led.ko   linuxrc  sbin     usr                                
dev      key.ko   led_app  mnt      sys      var                                
etc      key_app  lib      proc     tmp                                        
# insmod key.ko                                                                
# lsmod                                                                        
key 2249 0 - Live 0xbf000000                                                    
# <7>eth0: no IPv6 routers present



求解弹出 eth0:IPv6 routers present这个信息，是什么缘由

IPV4