Defined in 1 files as a macro:

• bsd/netinet/in.h, line 101 (as a macro)

Referenced in 4 files:

• bsd/netinet/igmp.c, line 497
• bsd/netinet/in_proto.c
  • line 159
  • line 295
• bsd/netinet/ip_input.c, line 870
• bsd/netinet/ip_mroute.c, line 579