RTF_PROTO2
flags |= RTF_PROTO2;
{ RTF_PROTO2, '2' },
#define RTF_ANNOUNCE RTF_PROTO2 /* announce L2 entry */
(RTF_LLINFO | RTF_PROTO1 | RTF_PROTO2 | RTF_PROTO3 | RTF_BLACKHOLE | \
{ RTF_PROTO2, '2' },
RTFLAG("2", RTF_PROTO2);