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55b4f5cc2e
Introduce a bsc_nat_parse method to parse a IP Access method into various parts. Write out the IPA Proto, in case SCCP is used, store the msg type, pointers to the source/dest local reference and other information. Use the result of bsc_nat_parse inside the bsc_nat_filter method to decide if the message should be dropped or not. In the future the bsc_nat_parse result will be used for patching SCCP references and other parts of the message. The filter language should be able to filter the msg type of SCCP messages and gain the "NOT" word in the filter language.