Defines starting with `s' in bsd/netinet

• SA bsd/netinet/ip_input.c:1141
• SIN_PROXY bsd/netinet/if_ether.h:156
• SIOCADNAT bsd/netinet/ip_nat.h:40
• SIOCCNATL bsd/netinet/ip_nat.h:47
• SIOCFLNAT bsd/netinet/ip_nat.h:46
• SIOCGFRST bsd/netinet/ip_nat.h:44
• SIOCGIPST bsd/netinet/ip_nat.h:45
• SIOCGNATL bsd/netinet/ip_nat.h:43
• SIOCGNATS bsd/netinet/ip_nat.h:42
• SIOCRMNAT bsd/netinet/ip_nat.h:41
• SOCKADDR_IN bsd/netinet/ip_nat.c:124
• __STDC__ bsd/netinet/udp_usrreq.c:87