pub unsafe extern "system" fn PxeDhcpv6ParseRelayForw(
    prelayforwpacket: *const c_void,
    urelayforwpacketlen: u32,
    prelaymessages: *mut PXE_DHCPV6_NESTED_RELAY_MESSAGE,
    nrelaymessages: u32,
    pnrelaymessages: *mut u32,
    ppinnerpacket: *mut *mut u8,
    pcbinnerpacket: *mut u32,
) -> u32