V2EX = way to explore
V2EX 是一个关于分享和探索的地方
现在注册
已注册用户请  登录
qingmuhy0
V2EX  ›  宽带症候群

请教一个奇怪的网络连通性问题

  •  
  •   qingmuhy0 · 48 天前 · 919 次点击
    这是一个创建于 48 天前的主题,其中的信息可能已经有所发展或是发生改变。
    root@wiki-4837-pre:~# curl -I http://www.gstatic.com/generate_204
    curl: (28) Failed to connect to www.gstatic.com port 80 after 3067 ms: Couldn't connect to server
    root@wiki-4837-pre:~# curl -I http://www.gstatic.com/generate_204 -vv
    * Host www.gstatic.com:80 was resolved.
    * IPv6: 2607:f8b0:4007:810::2003
    * IPv4: 142.250.189.3
    *   Trying 142.250.189.3:80...
    *   Trying [2607:f8b0:4007:810::2003]:80...
    * Immediate connect fail for 2607:f8b0:4007:810::2003: Network is unreachable
    * connect to 142.250.189.3 port 80 from 172.247.*.* port 53350 failed: Connection timed out
    * Failed to connect to www.gstatic.com port 80 after 3100 ms: Couldn't connect to server
    * Closing connection
    curl: (28) Failed to connect to www.gstatic.com port 80 after 3100 ms: Couldn't connect to server
    root@wiki-4837-pre:~# nexttrace 142.250.189.3
    NextTrace v1.3.4 2024-09-10T13:25:26Z 6a3ea6a
    2024/10/15 11:46:23 IP connection has been timeout, please check your network
    [NextTrace API] preferred API IP -  - ms - Get "https://45.88.195.154:443/v3/challenge/request_challenge": dial tcp 45.88.195.154:443: connect: connection timed out
    RetToken failed 3 times, please try again after a while, exit
    root@wiki-4837-pre:~# 
    

    一个上游是 cera 的 4837 优化线路,我连接服务器和 ping 服务器都正常,ssh 连接也正常。

    但是从 vps 访问其他网站就时不时啥也连不上,这到底是啥问题啊,有点摸不着头脑。

    5 条回复    2024-10-16 09:59:29 +08:00
    qingmuhy0
        1
    qingmuhy0  
    OP
       48 天前
    ```shell
    root@wiki-4837-pre:~# ping 142.250.68.99
    PING 142.250.68.99 (142.250.68.99) 56(84) bytes of data.
    64 bytes from 142.250.68.99: icmp_seq=1 ttl=57 time=0.340 ms
    64 bytes from 142.250.68.99: icmp_seq=2 ttl=57 time=0.306 ms
    64 bytes from 142.250.68.99: icmp_seq=3 ttl=57 time=0.330 ms
    ```
    ping 那个 IP 的话,也是能通的。
    qingmuhy0
        2
    qingmuhy0  
    OP
       48 天前
    这个问题,是时不时出现的,一会通,一会不通,这是机房的问题嘛。
    重装系统都试过了,还是一样的。
    basncy
        3
    basncy  
       48 天前
    #1 这结果, 细思极恐. 检查一下什么 app 干的.
    qingmuhy0
        4
    qingmuhy0  
    OP
       48 天前
    感觉就是机房问题,icmp 正常,tcp 时不时不通,玄学问题。
    lcy630409
        5
    lcy630409  
       48 天前
    关 ipv6 保平安
    关于   ·   帮助文档   ·   博客   ·   API   ·   FAQ   ·   实用小工具   ·   5473 人在线   最高记录 6679   ·     Select Language
    创意工作者们的社区
    World is powered by solitude
    VERSION: 3.9.8.5 · 22ms · UTC 09:12 · PVG 17:12 · LAX 01:12 · JFK 04:12
    Developed with CodeLauncher
    ♥ Do have faith in what you're doing.