3.15.1 Registering the Internet protocol version

Create a definition file as shown below and describe the definition information.

Organization of this subsection

(1) Creating a definition file
(2) Contents of the definition file
(3) Notes

(1) Creating a definition file

Create a definition file with the following path name:

JP1/FTP-installation-directory\IPversion.ini

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(2) Contents of the definition file

Specify information in the format of a Windows initialization file (.ini), as shown below:

[Figure]

The following table lists and describes the section, key, and values that can be specified.

Table 3‒19: Contents of the definition file (IPversion.ini)
Section	Key	Value	Description
`[address_family_S]`	`IPv4`	`ON\|OFF` `<<ON>>`	Specifies whether to use IPv4 at the FTP server when accepting a connection from the FTP client. `ON`: Uses IPv4. `OFF`: Does not use IPv4.
`[address_family_S]`	`IPv6`	`ON\|OFF` `<<OFF>>`	Specifies whether to use IPv6 at the FTP server when accepting a connection from the FTP client. `ON`: Uses IPv6. `OFF`: Does not use IPv6.
`[address_family_C]`	`IPv4`	`ON\|OFF` `<<ON>>`	Specifies whether to use IPv4 at the FTP client when connecting to the FTP server. `ON`: Uses IPv4. `OFF`: Does not use IPv4.
	`IPv6`	`ON\|OFF` `<<OFF>>`	Specifies whether to use IPv6 at the FTP client when connecting to the FTP server. `ON`: Uses IPv6. `OFF`: Does not use IPv6.
	`Priority`	`IPv4\|IPv6` `<<IPv4>>`	Specifies the Internet protocol version preferred by the FTP client when connecting to the FTP server. `IPv4`: IPv4 is given priority. `IPv6`: IPv6 is given priority. This definition is used for selecting the Internet protocol version to be used for connection in the following cases. When the FTP client's transmission source address is not specified: A host name is specified for the remote host name of the transmission card, and both IPv4 and IPv6 IP addresses are defined for that host name. When the FTP client's transmission source address is specified: A host name is specified in the `/H` option of the `ftstran` command, or in the client host name input field in a custom job, and both IPv4 and IPv6 IP addresses are defined for that host name.
`[address_family_L]`	`Use`	`IPv4\|IPv6` `<<IPv4>>`	Specifies the Internet protocol version to be used by the JP1/File Transmission Server/FTP Log service for connecting to the JP1/File Transmission Server/FTP Server service or the JP1/File Transmission Server/FTP Client service. `IPv4`: Uses IPv4. `IPv6`: Uses IPv6.

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(3) Notes

If there is no definition file, the Internet protocol version selection is invalid. In this case, IPv4=ON and IPv6=OFF are assumed at both the FTP server and the FTP client.
If IPv4=OFF and IPv6=OFF are defined at the FTP server, it is considered that there is no definition. In this case, IPv4=ON and IPv6=OFF are assumed.
If IPv4=OFF and IPv6=OFF are defined at the FTP client, the definition is assumed not to exist. In this case, IPv4=ON and IPv6=OFF are assumed.

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