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wazon

wazon

V2EX member #199288, joined on 2016-10-31 22:51:55 +08:00
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也曾经碰到过计费系统的问题,被客服兜来兜去。最后是新开了个工单,把各种解释的路都堵上,贴出了自己的证据,要求阿里云拿出证据。最后才核实确认有问题。
经过更进一步抓包分析,似乎 b 站开直播的时候,光猫 MSS 钳制的功能会间歇性出问题。

一般来说应该是:SYN MSS=1440 ,SYN+ACK MSS=1432
出问题时则是:SYN MSS=1440 ,SYN+ACK MSS=1440
可能导致服务器端回传的包过大,造成 Previous segments not captured

所以改本机 MTU 为 1492 ,其实就是从 SYN 开始就设成 MSS=1432 ,进而避免问题
@starinmars 经过测试,强制指定:
netsh interface ipv6 set subinterface 以太网 mtu=1492
就能缓解这个问题。
不过我这边两个光猫在路由模式下 RA 的 MTU 都是 1500
@starinmars 我这光猫需要设成路由模式,看来情况还是有差别的
@starinmars 想问下,光猫的 RA 能改 MTU 么,还是改的下级路由?另外,按你说的改了就没问题了么?
@starinmars 在你这边仅仅修改拨号设置的 MTU 就能解决问题么?
@beyondstars 路由模式。但这是 2.5G 光猫,而且带宽远远没有打满,IPv4 也没问题,不太可能单纯是性能问题。
@qwwuyu 是 adb ,主题中打错了
Feb 14, 2023
Replied to a topic by wazon 问与答 Chrome 如何开启设备端加密?
@546L5LiK6ZOt 我过一段时间重试就行了,没做过什么特别的事
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