UATH_CMD_FLAG_MAGIC
&val, sizeof(val), UATH_CMD_FLAG_MAGIC);
hdr->magic = htobe32((cmd->flags & UATH_CMD_FLAG_MAGIC) ? 1 << 24 : 0);
&cap, sizeof cap, val, sizeof(uint32_t), UATH_CMD_FLAG_MAGIC);
&which, sizeof(which), odata, olen, UATH_CMD_FLAG_MAGIC);