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TCP-Source-Port  AVP ( 2843 )

When Untrusted WLAN over S2b access is supported as defined in in the referenced specification,The TCP-Source-Port AVP contains the TCP source port number used for the IKEv2 tunnel in the case that a NAT and firewall are detected and the IKEv2 messages exchanged between the UE and the ePDG are transported using the firewall traversal tunnel as described in 3GPP TS 24.302.
Reference: 3GPP TS 29.212-f60   View

Type:

  Unsigned32

Mandatory Bit:

  MUST NOT

Protection Bit:

  MAY

Vendor ID:

  10415

Value Length:

  4 .. 4

Minimum Value:

  0

Maximum Value:

  4294967295

Containing AVPs
Access-Network-Reports

Containing Messages
Re-Auth-Request Rx
Session-Termination-Answer Rx
Credit-Control-Request Gx