Netopia R2020 User Reference Manual page 156

10-30 User's Reference Guide
For example:
To delete a configured subnet, set both the IP address and subnet mask values to 0.0.0.0, either explicitly
or by clearing each field and pressing Return or Enter to commit the change. When a configured subnet is
deleted, the values in subsequent rows adjust up to fill the vacant fields.
Note that the subnets configured on this screen are tied to the address serving pools configured on the IP
Address Pools screen, and that changes on this screen may affect the IP Address Pools screen. In particular,
deleting a subnet configured on this screen will delete the corresponding address serving pool, if any, on the IP
Address Pools screen.
IP Address
----------------
#1: 192.128.117.162
#2: 192.128.152.162
#3: 0.0.0.0
#4:
#5:
#6:
#7:
#8:
IP Subnets
Subnet Mask
---------------
255.255.255.0
255.255.0.0
0.0.0.0