Epson Color Laser Printer Owner's Manual page 48

If the Dynamic DNS function is not supported, we recommend
that you select Manual and enter an IP address. This is because
if you select Automatic, the IP address of the print server
changes every time you turn on the printer so that you need to
change the printer port setting accordingly.
5. When setting an IP address using the ping command, select
the Set using PING check box. Do not select it when setting
an IP address with EpsonNet
WinAssist/MacAssist/WebAssist; this prevents any
unexpected changes of the IP address.
Note:
Be sure not to select the check box when not using ping; this prevents
an unexpected change of the IP address by EpsonNet WebManager.
6. If you want to get a private address between 169.254.1.1 and
169.254.254.254 automatically when an IP address cannot be
obtained by the DHCP server, leave the Set using Automatic
Private IP Addressing (APIPA) check box selected; otherwise,
clear the check box.
7. To assign an IP address manually, enter the IP address, the
subnet mask, and the default gateway. Be sure the IP address
does not conflict with any other devices on the network.
Note:
If there is a server or a router functioning as a gateway, enter the IP
address of the server or the router for the gateway address. If there
is no gateway, leave the default values there.
8. Click the Extended Settings button if you want to make
extended settings, such as Dynamic DNS and Universal Plug
and Play functions.
48
How to Set Up the Print Server