2012-11-21 2013-05-01 0-31, 127 Standards Action 32-63 Specification Required 0 ANNOUNCE 1 MAP 2 PEER 3-63 Unassigned 64-95 Reserved 96-126 Reserved for Private Use 127 Reserved 0-127, 255 Standards Action 128-191 Specification Required 0 SUCCESS Success. 1 UNSUPP_VERSION The version number at the start of the PCP Request header is not recognized by this PCP server. This is a long lifetime error. describes PCP version 2. 2 NOT_AUTHORIZED The requested operation is disabled for this PCP client, or the PCP client requested an operation that cannot be fulfilled by the PCP server's security policy. This is a long lifetime error. 3 MALFORMED_REQUEST The request could not be successfully parsed. This is a long lifetime error. 4 UNSUPP_OPCODE Unsupported Opcode. This is a long lifetime error. 5 UNSUPP_OPTION Unsupported Option. This error only occurs if the Option is in the mandatory-to-process range. This is a long lifetime error. 6 MALFORMED_OPTION Malformed Option (e.g., appears too many times, invalid length). This is a long lifetime error. 7 NETWORK_FAILURE The PCP server or the device it controls are experiencing a network failure of some sort (e.g., has not obtained an External IP address). This is a short lifetime error. 8 NO_RESOURCES Request is well-formed and valid, but the server has insufficient resources to complete the requested operation at this time. For example, the NAT device cannot create more mappings at this time, is short of CPU cycles or memory, or is unable to handle the request due to some other temporary condition. The same request may succeed in the future. This is a system-wide error, different from USER_EX_QUOTA. This can be used as a catch- all error, should no other error message be suitable. This is a short lifetime error. 9 UNSUPP_PROTOCOL Unsupported transport protocol, e.g. SCTP in a NAT that handles only UDP and TCP. This is a long lifetime error. 10 USER_EX_QUOTA This attempt to create a new mapping would exceed this subscriber's port quota. This is a short lifetime error. 11 CANNOT_PROVIDE_EXTERNAL The suggested external port and/or external address cannot be provided. This error MUST only be returned for: * MAP requests that included the PREFER_FAILURE Option (normal MAP requests will return an available external port); * MAP requests for the SCTP protocol (PREFER_FAILURE is implied); * PEER requests. See Section 13.2 of for processing details. The error lifetime depends on the reason for the failure. 12 ADDRESS_MISMATCH The source IP address of the request packet does not match the contents of the PCP Client's IP Address field, due to an unexpected NAT on the path between the PCP client and the PCP-controlled NAT or firewall. This is a long lifetime error. 13 EXCESSIVE_REMOTE_PEERS The PCP server was not able to create the filters in this request. This result code MUST only be returned if the MAP request contained the FILTER Option. See Section 13.3 for processing information. This is a long lifetime error. 14-191 Unassigned 192-254 Reserved for Private Use 255 Reserved Values 0-127 are mandatory to process, and 128-255 are optional to process. 0-63, 127-191, 255 Standards Action 64-95, 192-223 Specification Required 0 Reserved 1 THIRD_PARTY Indicates the MAP or PEER request is for a host other than the host sending the PCP Option. MAP, PEER 16 octets Request. May appear in response only if it appeared in the associated request. 1 2 PREFER_FAILURE Indicates that the PCP server should not create an alternative mapping if the suggested external port and address cannot be mapped. MAP 0 Request. May appear in response only if it appeared in the associated request. 1 3 FILTER Specifies a filter for incoming packets. MAP 20 octets Request. May appear in response only if it appeared in the associated request. As many as fit within maximum PCP message size. 4-95 Unassigned 96-126 Reserved for Private Use 127 Reserved 128-223 Unassigned 224-254 Reserved for Private Use 255 Reserved