How to determine the position from which the BGP protocol starts in an MPLS packet?

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irdr2020-05-20 01:17:25

Border Gateway Protocol

irdr, 2020-05-20 01:17:25

How to find out the exact position in the data stream from which the BGP protocol starts, if the packet type is MPLS, and after the mpls header, both the ip protocol and the ethernet header can go, etc. I can’t figure out how to find out the packet length before the start of the BGP protocol from this .

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