Variables starting with `u' in src/slirp

• udb src/slirp/udp.c:47
• udpcksum src/slirp/udp.c:54
• udp_last_so src/slirp/udp.h:39
• udps_opackets src/slirp/udp.h:90
• udpstat src/slirp/udp.c:45
• ui_u src/slirp/udp.h:66
• username src/slirp/slirpmain.h:41