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88 lines
2.4 KiB
ReStructuredText
88 lines
2.4 KiB
ReStructuredText
.. _hooks-bootp:
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``bootp``: Support for BOOTP Clients
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====================================
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This hook library adds support for BOOTP with vendor-information extensions
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(`RFC 1497 <https://tools.ietf.org/html/rfc1497>`__). Received BOOTP
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requests are recognized, translated into DHCPREQUEST packets by adding
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a ``dhcp-message-type`` option, and put into the "BOOTP" client class.
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Members of this class get infinite lifetime leases but the class can
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also be used to guard a pool of addresses.
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The DHCP-specific options, such as ``dhcp-message-type``, are removed from
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the server's responses; responses shorter than the BOOTP minimum
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size of 300 octets are padded to this size.
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This open source library is loaded
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similarly to other hook libraries by the ``kea-dhcp4`` process, and
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it takes no parameters.
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::
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"Dhcp4": {
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"hooks-libraries": [
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{ "library": "/usr/local/lib/libdhcp_bootp.so" },
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...
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]
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}
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.. note::
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This library can only be loaded by the ``kea-dhcp4`` process,
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as there is no BOOTP protocol for IPv6.
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.. note::
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A host reservation for a BOOTP client should use the hardware address
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as the identifier (the ``client-id`` option is a DHCP-specific option).
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.. _hooks-bootp-config:
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Incoming BOOTP packets are added to the BOOTP class, allowing administrators
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to segregate BOOTP clients into separate pools. For example:
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::
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"Dhcp4": {
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"client-classes": [
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{
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// The DHCP class is the complement of the BOOTP class
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"name": "DHCP",
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"test": "not member('BOOTP')"
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}
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],
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"subnet4": [
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{
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"subnet": "192.0.2.0/24",
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"pools": [
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{
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// BOOTP clients will be handled here
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"pool": "192.0.2.200 - 192.0.2.254",
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"client-class": "BOOTP"
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},
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{
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// Regular DHCP clients will be handled here
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"pool": "192.0.2.1 - 192.0.2.199",
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"client-class": "DHCP"
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}],
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...
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},
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...
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],
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...
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}
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.. _hooks-bootp-limitations:
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BOOTP Hooks Limitations
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~~~~~~~~~~~~~~~~~~~~~~~
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Currently the BOOTP library has the following limitation:
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- Basic BOOTP, as defined in `RFC 951
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<https://tools.ietf.org/html/rfc951>`__, is not supported. Kea only
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supports BOOTP with vendor-information extensions.
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