dhcpkit.ipv6.extensions.dslite module¶
Implementation of DS-Lite AFTR Name option as specified in RFC 6334.
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class
dhcpkit.ipv6.extensions.dslite.
AFTRNameOption
(fqdn: str = '')[source]¶ Bases:
dhcpkit.ipv6.options.Option
The AFTR-Name option consists of option-code and option-len fields (as all DHCPv6 options have), and a variable-length tunnel-endpoint- name field containing a fully qualified domain name that refers to the AFTR to which the client MAY connect.
The AFTR-Name option SHOULD NOT appear in any DHCPv6 messages other than the following: Solicit, Advertise, Request, Renew, Rebind, Information-Request, and Reply.
The format of the AFTR-Name option is shown in the following figure:
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_AFTR_NAME: 64 | option-len | +-------------------------------+-------------------------------+ | | | tunnel-endpoint-name (FQDN) | | | +---------------------------------------------------------------+
- OPTION_AFTR_NAME
- 64
- option-len
- Length of the tunnel-endpoint-name field in octets.
- tunnel-endpoint-name
- A fully qualified domain name of the AFTR tunnel endpoint.
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fqdn
= None¶ Domain name of the AFTR tunnel endpoint
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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
= 64¶