User`s guide

Remarks
If Dynamic Domain Name System (DNS) is available on your network and
your instrument uses DHCP, the Host Name is registered with the Dynamic
DNS service at power-on.
If DHCP is enabled (see SYSTem:COMMunicate:LAN:DHCP command), the
DHCP server can change the specified Host Name.
The Host Name is stored in non-volatile memory, and does not change
when power has been off, after a Factory Reset (*RST command), or after
an Instrument Preset (SYSTem:PRESet command).