ZTE H108N V.2.1 Configuration manual
Page 10 ZTE Proprietary and Confidential
With dynamic addressing, the router will get the IP address required to access
Internet dynamically, each time you connect, during the time that the connection
remains active. The next time you log in, you will be assigned a different IP
address.
The advantage of this configuration is the security as to make use of NAT
(Network Address Translation) the private addresses of the computers on your
LAN are not visible from the outside internet, but translated into a single public IP
and valid from the Internet.
In management GUI, it can be set on Setup->Internet Setup: