satosin_const
if (satosin_const(dst)->sin_addr.s_addr == INADDR_ANY &&
satosin_const(mask)->sin_addr.s_addr == INADDR_ANY))
sin = satosin_const(dst);
if(satosin_const(src)->sin_addr.s_addr == INADDR_ANY) {
fsin = satosin_const(fsa);
lsin = satosin_const(lsa);
uint32_t src_port = satosin_const(src)->sin_port;
uint32_t dst_port = satosin_const(dst)->sin_port;
&satosin_const(src)->sin_addr.s_addr;