Defined in 5 files as a macro:
- contrib/tcpdump/ip6.h, line 99 (as a macro)
- sys/contrib/ipfilter/netinet/ip_compat.h, line 1137 (as a macro)
- sys/contrib/ipfilter/netinet/ip_compat.h, line 1140 (as a macro)
- sys/netinet/ip6.h, line 99 (as a macro)
- sys/netinet/ip6.h, line 103 (as a macro)