Micro-outages? (DNS issue?)

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Behodar

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#303450 11-Feb-2023 11:18

Hi all,

I've been having an issue recently where I can try to open something like Geekzone, but it will just hang with the page not loading. Other sites will exhibit the same issue at the same time, however anything that's already running (such as a video stream or a game) will continue to run without issues.

The problem lasts maybe 30 seconds, then suddenly all is well again. This doesn't really give me enough time to go to another computer and see whether it works there.

I have a Getflix account and I've noticed that toggling the DNS over to Getflix will resolve the issue immediately, which makes me wonder whether it's a Voyager DNS issue. However, it's also possible that it's something isolated to my computer and that toggling DNS is enough to "reset" the connection and get it working again.

Has anyone else run into these sorts of "hangs"? If not, then it's probably something at my end, but it would be good to narrow it down.

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#3034954 11-Feb-2023 12:34

Router on the way out maybe?

How old?

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Jase2985

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#3034955 11-Feb-2023 12:42

all seems fine here.

my smoke ping graphs of the DNS servers show nothing is out of the ordinary

Behodar

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#3034985 11-Feb-2023 13:36

Thanks. There's another thread about IPv6 issues and while it's specifically talking about Microtik and I'm on Synology, I'll still try turning off v6 as a first step.

michaelmurfy

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#3034986 11-Feb-2023 13:51

Please don't disable IPv6 as a solution as this is not at all the solution. Also I don't want to see anyone on here recommending that as a solution. Voyager don't have any IPv6 issues (I have 2 connections with them with IPv6 enabled and it is rock solid stable).

I have also not personally seen any DNS issues on Voyager.

Instead, enable DNS over HTTPS with Cloudflare or NextDNS and see how this works (see: https://mariushosting.com/synology-how-to-enable-dns-over-https-on-rt6600ax/). With the Synology router you can also have multiple networks with different DNS on each. This adds additional privacy for you also.

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SirHumphreyAppleby

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#3034991 11-Feb-2023 14:38

Behodar:

Hi all,

I've been having an issue recently where I can try to open something like Geekzone, but it will just hang with the page not loading. Other sites will exhibit the same issue at the same time, however anything that's already running (such as a video stream or a game) will continue to run without issues.

I've been seeing a lot more of this lately. Pages hang, a refresh almost always sorts it which supports the idea that this may be an IPv6 related issue. The browser usually shows the site waiting on third-party content when this occurs.

I assume a browser just does a connect(), so it's left to the OS to determine if IPv4 or IPv6 is used. I'm using Firefox on FreeBSD.

RunningMan

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#3034993 11-Feb-2023 14:48

michaelmurfy:

Please don't disable IPv6 as a solution as this is not at all the solution. Also I don't want to see anyone on here recommending that as a solution.

I don't think it's being proposed as a solution, it's proposed as a troubleshooting step - there's a significant difference. If disabling IPv6 (or IPv4 or hardware offload or DPI or whatever other feature) stops the symptoms temporarily, then it's given you a good area to focus on for further diagnosis. If it makes no difference, then turn it back on. By isolating which primary system the fault lies in, then you get to the root cause quicker.

In the OP's case, if they disable IPv6 and IPv4 performs fine, then there's likely a config issue with their IPv6 setup. The quality of the ISP's IPv6 network has no relationship to if they got a setting for IPv6 wrong in their router, so it's an easy check to rule that in or out.

Having said that, if the problem can be reproduced with a specific site/s then perhaps checking the browser tools/logs would give a better idea as to what is going wrong than disabling half the IP address space.

Behodar

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#3035011 11-Feb-2023 15:15

Yep, I've only disabled it for troubleshooting. It can sometimes be a day or two between issues so I'm likely to go a bit "quiet" unless the problem recurs early.

michaelmurfy

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#3035013 11-Feb-2023 15:32

It's fine to disable it for troubleshooting but I am more saying I don't want people recommending "disable IPv6" on here given it is rarely the reason for any issues. ISP's provide IPv6 as a production service and also have it enabled on all their provided routers so it is important to treat it at the same priority as IPv4.

But as per my advise above I do recommend enabling DNS over HTTPS as I've seen it work a whole lot better on the Synologys plus it adds additional privacy.

MadEngineer

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#3035473 12-Feb-2023 17:07

What browser? If you're using an ad-block you'll find Edge for example will sometimes sit there trying to load something page until it eventually gives up

You're not on Atlantis anymore, Duncan Idaho.

Behodar

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#3035499 12-Feb-2023 18:10

Safari. I don't believe it to be an ad blocker/extension problem since it goes away when using Getflix DNS.

In any case, I'm still just going to continue testing one thing at a time. Watch this space...

michaelmurfy

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#3035500 12-Feb-2023 18:12

Have you tried enabling DNS over HTTPS as I’ve said twice now above?

Behodar

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#3035501 12-Feb-2023 18:26

Not yet. I'm testing one thing at a time, otherwise I won't know which fix (or workaround) has actually had an effect.

Scott3

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#3035577 12-Feb-2023 18:59

I had a similar issue. Some websites like google loading fine (I assume ipv6?), but others like trademe not loading (DNS error).

As per OP, resolved in around 30s, so not enough time to change to a differnt DNS server to diagnoise.

On 2 degrees.

MadEngineer

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#3035949 13-Feb-2023 13:17

Next time it happens hit your windows button, type cmd, hit enter then type nslookup trademe.co.nz

I think you can take IPv6 out of the question as trademe doesn't have IPv6

You're not on Atlantis anymore, Duncan Idaho.

Behodar

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#3039048 19-Feb-2023 16:22

The issue has yet to recur since disabling IPv6 on my client. Due to the intermittent nature I'm going to give it a few more days, then I'll turn v6 back on and try some of the other suggestions. I'll also do some research and see whether there are any known bugs (Mac OS 12.6.3).

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