root@am335x-evm:/# ifconfig eth1 up
[ 700.969739] net eth1: initializing cpsw version 1.12 (0)
[ 701.054874] net eth1: phy found : id is : 0x4dd072
root@am335x-evm:/# [ 704.055311] cpsw 4a100000.ethernet eth1: Link is Up - 100Mbps/Full - flow control rx/tx
eth1 Link encap:Ethernet HWaddr E4:15:F6:C7:3E:05
inet addr:192.168.1.14 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:63 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4093 (3.9 KiB) TX bytes:240 (240.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
从其他IP PING这个地址，（TX bytes:240 (240.0 B)）会一直增加，但还是ping不通
