Network connection resolved

After changing my main board , NIC also be changed, how to connect  to the Internet   ?

Modify /etc/udev/rules.d/70-persistent-cd.rules, get rid of no used configuration line or delete this file,

then modify /etc/ network/interfaces , you can choose the vim to open this file,

delete the all of the contents about auto doing...something,

$ sudo reboot

 config your new net configurations.