NID_sbgp_ipAddrBlock
{"sbgp-ipAddrBlock","sbgp-ipAddrBlock",NID_sbgp_ipAddrBlock,8,
.ext_nid = NID_sbgp_ipAddrBlock,
NID_sbgp_ipAddrBlock, /* 290 */
x->rfc3779_addr = X509_get_ext_d2i(x, NID_sbgp_ipAddrBlock, &i, NULL);