Defined in 2 files as a macro:

• crypto/openssh/defines.h, line 75 (as a macro)
• sys/netinet/ip.h, line 110 (as a macro)

Referenced in 6 files:

• contrib/netcat/netcat.c, line 1246
• crypto/openssh/misc.c, line 1419
• crypto/openssh/readconf.c, line 2091
• crypto/openssh/regress/netcat.c, line 1212
• crypto/openssh/servconf.c, line 406
• sbin/ipfw/ipfw2.c, line 175