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my windows 11 ipv6 is super slow sunday 2026/9/13 and is usually buggy every day

troubleshooting:

  • noticed cloudflare's ipv6 security dns template would not automatically fill in after adding the security ipv6 dns when the cloudflare regular ipv6 did (on the windows 11 network dns settings)
    • still even with only cloudflare's regular ipv6 that both my primary and secondary ipv6 choices, my internet was still very slow
  • disabled ipv6 on windows 11 network adapter settings and all my problems went away for now

do i need ipv6 for security or speed? does it improve game ping? if not im just going to keep ipv6 disabled. im tired of having a super slow or unreliable internet connection. my network adapter settings were the default fresh out of the box windows 11 settings until now (unless i need to tweak more, please help and ty. im obviously a noob)

Source: r/dns · by /u/SelectToe2185

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