I'm looking to write a perl based IPv6 application where the app creates a TCP based connection which includes a custom IPv6 extension header. Ideally, within the app I would perform the normal sequence of calls to create the TCP socket and then use something akin to setsockopt() to define the extension header contents. Ideally, all the next-header stuff would get setup correctly in the entire IPv6 packet (IPv6 next-header references extension header protocol value, extension header defines TCP as next-protocol, etc.). I'm looking to avoid starting from some concept of raw sockets and having to hand-roll each layer. Key is that I want the app to be able to use the stock TCP network calls and then build/insert the specific IPv6 extension headers.
Perl modules which might support this? Or example code to do this?
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