(ipmacset是自己写的修改ip\mac的函数)通过ipmacset命令后，ip地址改了,MAC 也改了，可是这里去ping不通，
并且bootline中的目标板的地址却还是原来的，启动时显示的mac还是原来的，奇怪！！
-> ipmacset
ixe0 MAC address: 00:02:b3:3c:16:68
ixe1 MAC address: 00:02:b3:3c:16:69
ixe0 IP address: 169.254.113.143
ixe1 IP address: 169.254.113.144
Any Changes (y/n)> y
Change a MAC address (y/n)> y
ixe0 MAC address: 00:02:b3:3c:16:68 00:02:b3:3c:16:68
ixe1 MAC address: 00:02:b3:3c:16:69 00:02:b3:3c:16:64
Change ixe IP address (y/n)> y
ixe0 IP address: 169.254.113.143 169.254.113.146
ixe1 IP address: 169.254.113.144 169.254.113.147
ixe0 MAC address: 00:02:b3:3c:16:68
ixe1 MAC address: 00:02:b3:3c:16:64
ixe0 IP address: 169.254.113.146
ixe1 IP address: 169.254.113.147
Any Changes (y/n)> y
Change a MAC address
