root@beaglebone:~# i2cdump -f 0 0x50
No size specified (using byte-data access)
WARNING: This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-0, address 0x50, mode byte
Continue 【Y/n】
然后按了一下回车,重新启动后,就出现了网卡不工作的问题。