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Man Pages


Manual Reference Pages  -  DHCP6CTL (8)

NAME

dhcp6ctl - DHCPv6 client and server control utility

CONTENTS

Synopsis
Description
Key File
Commands
Files
See Also
History

SYNOPSIS

dhcp6ctl [-C-\(ba -S ] [-k keyfile] [-p port] [-s address] command

DESCRIPTION

dhcp6ctl controls the operation of a DHCPv6 process, which is either dhcp6c or dhcp6s, a DHCPv6 client or a server. By default, dhcp6ctl controls a client. The type of the process can also be specified explicitly by the -C or -S options.

dhcp6ctl communicates with the DHCPv6 process over a TCP connection, sending commands authenticated with digital signatures. Currently, the only supported authentication algorithm is HMAC-MD5, which uses a shared secret on each end of the connection.

Command line options are as below:
-C Control a DHCPv6 client. This option is exclusive with the -S option.
-S Control a DHCPv6 server. This option is exclusive with the -C option.
-k keyfile
  Use keyfile to provide the shared secret to communicate with the process. The default file name used when unspecified is /usr/local/etc/dhcp6cctlkey with a client, and /usr/local/etc/dhcp6sctlkey with a server.

-p port
  Specify port as the listening port of the process. The default port number used when unspecified is 5546 for a client, and 5547 for a server.
-s address
  Specify as the listening address of the process. The default address used when unspecified is ::1.

KEY FILE

Since the operation available with the dhcp6ctl command is powerful, the communication between the command and dhcp6c or dhcp6s must be authenticated. The supported algorithm for authentication is HMAC-MD5, which requires a shared secret, and the secret is stored in the key file. The key file must consist of a single line, in which the secret value is written in the form of BASE-64 encoding.

COMMANDS

Each command specifies a single control operation. Supported commands are as follows:

reload
  This command specifies the process to reload the configuration file. Existing bindings, if any, are intact.
remove arguments
  This command is only applicable to a server. This specifies the server to remove a run-time object specified by arguments from the server. Currently, the only possible object is one particular IA_NA or IA_PD binding, which is specified as binding IA IA_NA IAID DUID’ or binding IA IA_PD IAID DUID’ where IAID is a decimal number specifying the IAID of the IA, and DUID is a DHCP Unique Identifier of the binding. The format of DUID is the same as that specified in dhcp6s.conf(5).
start interface ifname
  This command is only applicable to a client. It tells the client to release the current configuration information (if any) on the interface ifname and restart the DHCPv6 configuration process on the interface.
stop interface ifname
  This command is only applicable to a client. It tells the client to release the current configuration information (if any) on the interface ifname. Any timer running for the interface will be stopped, and no more DHCPv6 messages will be sent on the interface. The configuration process can later be restarted by the start command.
stop
  This command stops the specified process. If the process is a client, it will release all configuration information (if any) and exits.

FILES

/usr/local/etc/dhcp6cctlkey
  is the default key file to communicate with a client.
/usr/local/etc/dhcp6sctlkey
  is the default key file to communicate with a server.

SEE ALSO

dhcp6s.conf(5) dhcp6s(8)

HISTORY

The dhcp6ctl command first appeared in WIDE/KAME IPv6 protocol stack kit.
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