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Currently, when P-TMSI patching is enabled, a new BSS P-TMSI is generated for each Attach Accept. So two duplicated, subsequent Attach Accept messages will be mapped to different BSS side P-TMSI. Because the last one will replace former ones in the link_info struct, the MS will fail to access the SGSN if it uses the former P-TMSI to derive the new TLLI. This patch checks the SGSN P-TMSI already assigned to the link_info and only generates a new BSS P-TMSI on mismatch (or if the BSS P-TMSI hasn't been set yet). Ticket: OW#1322 Sponsored-by: On-Waves ehf
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