Defined in 1 files as a macro:

• bsd/netinet/ip_var.h, line 165 (as a macro)

Referenced in 3 files:

• bsd/netinet/in_mcast.c
  • line 1695
  • line 1726
• bsd/netinet/ip_output.c, line 3023
• bsd/netinet/raw_ip.c, line 682