Technical References

A 17-octet sequence representing an IPv6 address or address with prefix-length. It consists of 16
octets of address followed by an octet of 255 (for address) or the prefix-length (0-128).
AT_IPADDR (ipaddr)
A 32-bit IPv4 address.
AT_IPKEY (ipkey)
An IP address that can be associated with a port number and/or a required TSIG key name.
The canonical textual values are:
● <address>
● <address>:<port>
● <address>:<port>-<key>
● <address>-<key>
AT_IPNET (net)
An IPv4 address and a count of the bits that comprise the network number.
AT_IPPAIR (ippair)
A pair of IPv4 addresses, stored in 8 octets.
AT_KEY (key)
A sequence of bytes holding a shared-secret key. These have a base-64 textual representation
rather than the standard AT_BLOB representation.
AT_LISTREF (listref)
Deprecated.
AT_MACADDR (macaddr)
A MAC address, most frequently a 6 byte ethernet address with type 1, but more generally an
arbitrary 1 byte type id, a 1 byte length and then 'length' address bytes.
AT_MASK (mask)
An
AT_IPADDR that is in the form of an IP address mask (its binary sequence matches 1*0*).
AT_MESSAGE (dhcpmsg)
A DHCP message type.
AT_MSDATE (msdate)
A 64-bit value that represents a specific point in time to millisecond resolution.
AT_MSG6 (msg6)
A DHCPv6 message.
AT_MSTIME (mstime)
A 64-bit integer value that represents a span of time to millisecond resolution.
AT_NAMEREF (nameref)
A string that refers to another object by name.
AT_NDICT (ndict)
Deprecated.
AT_NLIST (nlist)
A list of elements of some other type. This is the preferred type for storing lists.