[erlang-questions] How to add a option for inet:getopts

[William Gan]

Hello,

I am preparing to implement a transparent proxy by erlang, and I need an
equivalent call for
'getsockopt(fd,SOL_IP,SO_ORIGINAL_DST,&server,&slen)'. 

Can anyone give me some advice how to add such a call in erlang?

William Gan