Defines starting with `v' in bsd/netinet

• VF_HELP bsd/netinet/bootp.h:76
• VF_PCBOOT bsd/netinet/bootp.h:75
• VIFF_SRCRT bsd/netinet/ip_mroute.h:121
• VIFF_TUNNEL bsd/netinet/ip_mroute.h:120
• VM_NEXT bsd/netinet/bootp.h:107
• VM_STANFORD bsd/netinet/bootp.h:72