Defined in 4 files as a macro:

• contrib/tcpdump/ip.h, line 111 (as a macro)
• sys/contrib/ipfilter/netinet/ip_compat.h, line 799 (as a macro)
• sys/contrib/ipfilter/netinet/ip_compat.h, line 890 (as a macro)
• sys/netinet/ip.h, line 159 (as a macro)

Referenced in 15 files:

• contrib/ipfilter/ipsend/ipsopt.c
  • line 46
  • line 121
• contrib/ipfilter/ipsend/iptests.c, line 531
• contrib/ipfilter/lib/addipopt.c, line 49
• contrib/ipfilter/lib/ionames.c, line 28
• contrib/sendmail/src/daemon.c
  • line 3918
  • line 3935
• contrib/tcp_wrappers/fix_options.c, line 102
• contrib/tcpdump/print-ip.c
  • line 47
  • line 124
  • line 293
• contrib/telnet/telnet/commands.c, line 2911
• crypto/heimdal/appl/telnet/telnet/commands.c, line 2548
• sbin/ping/ping.c, line 1323
• sys/contrib/ipfilter/netinet/fil.c, line 209
• sys/contrib/ipfilter/netinet/ip_compat.h
  • line 798
  • line 889
• sys/netinet/ip_options.c
  • line 158
  • line 174
  • line 242
  • line 657
• sys/netipsec/xform_ah.c, line 342
• sys/netpfil/ipfw/ip_fw2.c, line 332