Structs starting with `s' in bsd/netinet

• sdlbuf bsd/netinet/ip_input.c:1607
• sioc_sg_req bsd/netinet/ip_mroute.h:156
• sioc_vif_req bsd/netinet/ip_mroute.h:167
• sockaddr_in bsd/netinet/in.h:294
• sockaddr_inarp bsd/netinet/if_ether.h:148