OPENBSD_AF_INET6
af = iph.ip_v == 6 ? OPENBSD_AF_INET6 : OPENBSD_AF_INET;
POKE_U32(buf, af == AF_INET6 ? OPENBSD_AF_INET6 : OPENBSD_AF_INET);
af = (PEEK_U32(buf) == OPENBSD_AF_INET6) ? AF_INET6 : AF_INET;