ubuntu 17.10 EAP failure

[Coder-zyq]

sysuh3c -u xxx -p xxx -m md5 -i enx00e04c360009

Got EAP Request for Identity
Got EAP Request for MD5-Challenge
EAP failure

so how to solve this , usb eth
the right mac address

i get succeed first,but then false

[zonyitoo]

sysuh3c -u xxx -p xxx -i enx00e04c360009

and try again?