On Tuesday 2021-09-07 15:54, Florian Westphal wrote: >> - /* Try to get same port: if not, try to change it. */ >> - for (port = ntohs(exp->saved_proto.tcp.port); port != 0; port++) { >> - int ret; >> + if (htons(nat->range_info.min_proto.all) == 0 || >> + htons(nat->range_info.max_proto.all) == 0) { > >Either use if (nat->range_info.min_proto.all || ... > >or use ntohs(). I will leave it up to you if you prefer >ntohs(nat->range_info.min_proto.all) == 0 or >nat->range_info.min_proto.all == ntohs(0). If one has the option, one should always prefer to put htons/htonl on the side with the constant literal; Propagation of constants and compile-time evaluation is the target. That works for some other functions as well (e.g. strlen("fixedstring")).