Defined in 2 files as a macro:

• bsd/net/if_types.h, line 125 (as a macro)
• bsd/net/if_types.h, line 136 (as a macro)

Referenced in 6 files:

• bsd/net/if_faith.c
  • line 266
  • line 442
• bsd/netinet/in_pcb.c, line 1149
• bsd/netinet/ip_icmp.c, line 335
• bsd/netinet/ip_input.c, line 914
• bsd/netinet6/in6.c, line 2606
• bsd/netinet6/ip6_input.c, line 708