dhcpkit.ipv6.extensions.linklayer_id module¶
Implementation of the Client LinkLayer Address relay option as specified in RFC 6939.
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class
dhcpkit.ipv6.extensions.linklayer_id.LinkLayerIdOption(link_layer_type: int = 0, link_layer_address: bytes = b'')[source]¶ Bases:
dhcpkit.ipv6.options.OptionThe format of the DHCPv6 Client Link-Layer Address option is shown below.
0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | OPTION_CLIENT_LINKLAYER_ADDR | option-length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | link-layer type (16 bits) | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | link-layer address (variable length) | | | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- option-code
- OPTION_CLIENT_LINKLAYER_ADDR (79)
- option-length
- 2 + length of link-layer address
- link-layer type
- Client link-layer address type. The link-layer type MUST be a valid hardware type assigned by the IANA, as described in RFC 826
- link-layer address
- Client link-layer address
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display_link_layer_type() → dhcpkit.protocol_element.ElementDataRepresentation[source]¶ Nicer representation of hardware types :return: Representation of hardware type
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load_from(buffer: bytes, offset: int = 0, length: int = None) → int[source]¶ Load the internal state of this object from the given buffer. The buffer may contain more data after the structured element is parsed. This data is ignored.
Parameters: - buffer – The buffer to read data from
- offset – The offset in the buffer where to start reading
- length – The amount of data we are allowed to read from the buffer
Returns: The number of bytes used from the buffer
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option_type= 79¶