{
  "id": "networking/udp-checksum-failure",
  "signature": "UDP: bad checksum from 10.0.0.2:12345 to 10.0.0.1:53",
  "signature_zh": "UDP：从10.0.0.2:12345到10.0.0.1:53的校验和错误",
  "regex": "UDP: bad checksum from \\d+\\.\\d+\\.\\d+\\.\\d+:\\d+ to \\d+\\.\\d+\\.\\d+\\.\\d+:\\d+",
  "domain": "networking",
  "category": "network_error",
  "subcategory": null,
  "root_cause": "The UDP datagram received has an incorrect checksum, indicating corruption during transit, a faulty network interface, or software that generates invalid checksums.",
  "root_cause_type": "generic",
  "root_cause_zh": "接收到的UDP数据报校验和错误，表明传输过程中发生损坏、网络接口故障或生成了无效校验和的软件。",
  "versions": [
    {
      "version": "Linux kernel 5.15",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "Linux kernel 6.1",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "FreeBSD 13.2",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Disabling UDP checksum offloading (ethtool -K eth0 tx-checksumming off) may mask the issue but doesn't fix the root cause if the sender generates bad checksums.",
      "fail_rate": 0.75,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Assuming it's a transient network issue and ignoring repeated occurrences can lead to data corruption in DNS responses or other UDP services.",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Check network interface for errors: ethtool -S eth0 | grep -i error",
      "success_rate": 0.85,
      "how": "Check network interface for errors: ethtool -S eth0 | grep -i error",
      "condition": "",
      "sources": []
    },
    {
      "action": "Update NIC driver or firmware to resolve hardware-level checksum issues: ifconfig eth0 down && modprobe -r driver_name && modprobe driver_name && ifconfig eth0 up",
      "success_rate": 0.8,
      "how": "Update NIC driver or firmware to resolve hardware-level checksum issues: ifconfig eth0 down && modprobe -r driver_name && modprobe driver_name && ifconfig eth0 up",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Check network interface for errors: ethtool -S eth0 | grep -i error",
    "Update NIC driver or firmware to resolve hardware-level checksum issues: ifconfig eth0 down && modprobe -r driver_name && modprobe driver_name && ifconfig eth0 up"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.kernel.org/doc/html/latest/networking/checksum-offloads.html",
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.81,
  "fix_success_rate": 0.75,
  "resolvable": "partial",
  "first_seen": "2024-02-28",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}