Function PxeDhcpv6GetOptionValue 

pub unsafe fn PxeDhcpv6GetOptionValue(
    ppacket: *const c_void,
    upacketlen: u32,
    uinstance: u32,
    woption: u16,
    pwoptionlen: Option<*mut u16>,
    ppoptionvalue: Option<*mut *mut c_void>,
) -> u32