OCT

REM:
1. 数据包发送完成后释放内容

srcs/lwip/src/arch_linux/netif/rawif.c

@@ -349,6 +349,8 @@ static err_t low_level_output(struct netif *netif, struct pbuf *p) {
             written = sendto(rawif->fd, pBuf, outSize, 0, (struct sockaddr *)&dstAddr, sizeof(dstAddr));
         }
 
+        free(pBuf);
+
         return written == (outSize) ? ERR_OK : ERR_IF;
 #endif
     } else {