Network issue / routing in 6.12.13

[clownstyle]

Hi all, 

I'm running the latest unraid build 6.12.13 and started having a problem with connectivity within my containers, namely sonarr and radarr. I normally connect to a known indexer which has been failing recently so in order to troubleshoot I tested this on my own Windows machine which works successfully.

Bypassing any container mis-configurations I've tried to ping this site using terminal in unraid which comes back with no response. NSLOOKUP does return valid information but I'm unable to ping the address (again this works on my Windows machine) I've checked the network settings in unraid and all looks good. I even reverted to using my ISPs own DNS for testing purposes with no luck.

I broke DNS on purpose which then fails to load any info in the APPS section of unraid - I've since restored those settings. I can ping many other sites without an issue but still failing to my specific indexer (but only from within unraid)

Can you provide any further tips on troubleshooting?

tower-diagnostics-20240917-0958.zip

Edited September 17, 2024 by clownstyle
Adding diagnostics

[JorgeB]

Try removing the router as the DNS server #1, and use instead 208.67.222.222 and 208.67.220.220 as servers #1 and #2

[clownstyle]

34 minutes ago, JorgeB said:

Try removing the router as the DNS server #1, and use instead 208.67.222.222 and 208.67.220.220 as servers #1 and #2

Hi JorgeB, when I intentionally broke DNS it did give me a popup prompt to enter those addresses which I did. It didn't solve my issues unfortunately.

When doing an NSLOOKUP it does find the correct addresses but cannot ping those. Traceroute doesn't even hit the gateway where on other addresses it does without issue. It's really strange!

Edited September 17, 2024 by clownstyle
Attachment

[JorgeB]

You can try booting the server with a new flash drive using a stock install, no key needed, then retest to see if it's a config issue or an external problem.

[clownstyle]

1 minute ago, JorgeB said:

You can try booting the server with a new flash drive using a stock install, no key needed, then retest to see if it's a config issue or an external problem.

That is a good shout, I wasn't sure if I could do that without breaking anything! I'll give that a shot now

[clownstyle]

1 hour ago, JorgeB said:

You can try booting the server with a new flash drive using a stock install, no key needed, then retest to see if it's a config issue or an external problem.

Well, I feel kinda stupid now but I'm going to tell you what fixed this, just so you can have a laugh at my expense 😅

My TP-Link router has some parental controls which can block various types of sites with each family member having their own profile. Somehow the MAC address for my server ended up on my daughters profile which would block any type of file sharing - Funny how it wasn't blocking anything else, but luckily I have multi-layer protection for the kids internet access 😇

I did use your suggestion and it pointed me in the right direction. I knew it was not any settings / containers in unraid because I was running on a fresh USB with no config. So that got me interrogating the router logs.. Hah. Wasted more hours than I care to admit working that one out but many thanks for your help Jorge!