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2.2.1 NAT-T Payload Types

Each ISAKMP message consists of a header and a variable number of payloads, each identified by a 1-octet payload type value in its Payload Type field, as specified in [RFC2408] section 3.1. NAT-T adds two new payload types: NAT Discovery (NAT-D) and NAT Original Address (NAT-OA). The payload type values for these payload types are specified in [RFC3947]. For more information about an alternative set of payload type values, see [DRAFT-NATT].<8>

The following table describes the NAT-D payload type.

NAT Discovery (NAT-D) payload type value

Revision

0x82

[DRAFT-NATT]

0x14

[RFC3947]

The following table describes the supported NAT-OA payload type.

Supported NAT Original Address (NAT-OA) payload type

Revision

0x83

[DRAFT-NATT]

0x15

[RFC3947]

 
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