Reddit.com is not working on Spectra DNS

varkey

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It's just some DNS issue, just use Google DNS or Cloudflare DNS and it works just fine. I had posted last night about the same in the other thread. The IP address returned when using Spectra default DNS server goes through some weird routing. (Similar when using Jio DNS)


[root@varkey-minipc ~]# dig +short www.reddit.com @180.151.151.151
reddit.map.fastly.net.
151.101.157.140
 

Sushubh

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Every freaking service having issue seems to be powered by Fastly. Imgur issues on Excitel is also due to connectivity with Fastly.
 


varkey

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Yeah, it could be fastly trying to over optimize things 🤦‍♂️
 

Shubham

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I have said time and again r/India has a tendency of overreaction and somehow they always convince themselves that the Government is out to get them.

Most of the times Reddit didn't used to work for me either, i changed my DNS. It still has outages for some time but it always works after some time.
 

Sushubh

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Dude's post has nothing about overreaction. If ISPs dns is not loading a particular domain, it is as good as blocked.
 


varkey

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Dude's post has nothing about overreaction. If ISPs dns is not loading a particular domain, it is as good as blocked.
Blocked my whom actually? It can due to mis-configuration on reddit's side too right? So would reddit be blocking certain ISPs in that case? ;)
 

varkey

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Well, Reddit (fastly in this case) controls what IP addresses are returned when a query is made to their name servers. And as I had posted earlier, that response changes depending on who is asking the fastly name servers.

When Spectra's DNS resolver queries the record, fastly returns an IP address which isn't properly routable on that network. Now who's fault is that? When Google DNS servers queries, fastly says go elsewhere, and when Cloudflare asks, it says go to another place altogether.

Clearly fastly here is trying to optimise the path so that we get pointed to their closest edge location. That mechanism could have very well gone wrong, or they may have tie up with carriers and the required configuration changes weren't propagated.

My point is, this is a special case, and I wouldn't put the blame on the ISPs entirely as things can go wrong at either places.
 

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