Defined in 1 files as a macro:

• bsd/netinet/in.h, line 480 (as a macro)

Referenced in 4 files:

• bsd/netinet/in.c, line 2419
• bsd/netinet/in_mcast.c
  • line 2003
  • line 3181
• bsd/netinet/ip_output.c
  • line 2507
  • line 2761
• tests/sockopt_ip.c, line 742