<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>校验和 on 文叨叨 | IaaS 排障手记</title><link>/tags/%E6%A0%A1%E9%AA%8C%E5%92%8C/</link><description>Recent content in 校验和 on 文叨叨 | IaaS 排障手记</description><generator>Hugo</generator><language>zh-cn</language><lastBuildDate>Sat, 03 Jan 2026 10:00:00 +0800</lastBuildDate><atom:link href="/tags/%E6%A0%A1%E9%AA%8C%E5%92%8C/index.xml" rel="self" type="application/rss+xml"/><item><title>为什么 ICMP 通但 TCP 不通？tunl 设备校验和没生效</title><link>/posts/calico-icmp-ok-tcp-fail-checksum/</link><pubDate>Sat, 03 Jan 2026 10:00:00 +0800</pubDate><guid>/posts/calico-icmp-ok-tcp-fail-checksum/</guid><description>k8s 环境 pod 之间 ICMP 通但 TCP 不通，client 收到 synack 却不响应。根因是 server 端 tunl 设备的 tx-checksumming 没生效，发出的包校验和错误。</description></item></channel></rss>