This object names the TFTP server from which a firmware
file can be downloaded using the built-in TFTP protocol.
This is the in-band system-directed upgrade method. The
download may be initiated by setting the
mrUpgradeTFTPInitiate to upgrade(1), or via an out-of-band
management action.
If the first non-blank character in
mrUpgradeTFTPServerAddress is a NetASCII numeral, the name
is assumed to be an IP address. Otherwise, the name is
assumed to be a fully qualified Domain Name Server name,
and the DNS protocol will be used to resolve it to an IP
address.
Default value: string of length 0.