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Timeline for the post: Devices receive IPv6 but some websites time out
Currently licensed under: CC BY-SA 4.0
| When | What | By | License | Comment |
|---|---|---|---|---|
Sep 27, 2026, 2:54:55 PM 2w ago | Answer | jonasfixar | CC BY-SA 4.0 | The important clue is that the problem only appears under the conditions you described. **Likely cause:** Path MTU discovery is blocked, causing larger IPv6 packets to disappear. **What I would try:** Allow required ICMPv6 traffic, verify the WAN MTU and configure MSS clamping only if the upstream link requires it. Avoid applying several fixes at once, otherwise it will be difficult to know which one mattered. |
Sep 13, 2026, 11:50:04 AM 4w ago | Created | troublesync_editorial | CC BY-SA 4.0 | Devices receive IPv6 but some websites time out |