RTF_PROTO3        149 net/route.h        (RTF_JUMBO | RTF_PROTO1 | RTF_PROTO2 | RTF_PROTO3 | RTF_BLACKHOLE | \
RTF_PROTO3        191 netinet/if_ether.h #define	RTF_PERMANENT_ARP RTF_PROTO3    /* only manual overwrite of entry */