Variables starting with `u' in netinet

• udb netinet/udp_usrreq.c:68
• udpcksum netinet/udp_usrreq.c:62
• udp_sendspace netinet/udp_usrreq.c:460
• udps_opackets netinet/udp_var.h:67
• uh_sum netinet/udp.h:45
• ui_u netinet/udp_var.h:42
• useloopback netinet/if_ether.c:92