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Kodiack
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  #3333612 20-Jan-2025 16:25
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There's one more issue that I'm personally noticing, btw: Akamai latency is all over the place (using 2d DNS), and I'm seeing dropped packets on IPv6.

 

 

 

A couple of MTRs, first for IPv4:

 

                                                                 Packets               Pings
 Host                                                          Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router.lan                                                  0.0%    21    0.3   0.3   0.2   0.3   0.0
 2. v1.akmod-bng1.tranzpeer.net                                 0.0%    20    1.8   2.5   1.8   4.3   0.6
 3. (waiting for reply)
 4. a104-98-3-67.deploy.static.akamaitechnologies.com           0.0%    20   71.0  70.4  69.8  72.8   0.7

 

And IPv6:

 

                                                                 Packets               Pings
 Host                                                          Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. 2406:e001:2:9e00:6e3b:6bff:fe1c:3ed0                        0.0%    36    0.3   0.3   0.3   0.4   0.0
 2. default-rdns.vocus.co.nz                                    2.8%    36    2.1   2.3   1.7   3.6   0.6
 3. (waiting for reply)
 4. g2600-1415-0018-0000-0000-0000-6860-a9b1.deploy.static.aka  0.0%    35    2.7   2.9   2.1   4.3   0.6




wipash
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  #3333616 20-Jan-2025 16:33
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yitz:

 

A more complete set based on post #3333086 might be 

 

dig +short A ping.mcgrath.nz @202.180.64.10
104.21.96.1
104.21.64.1
104.21.48.1
104.21.112.1
104.21.80.1
104.21.16.1
104.21.32.1

 

I suppose these would be one set of IPv4 addresses used to access ephemeral services exposed by Cloudflares reverse tunnel.

 

Edit: as above 104.21.16.1 might be the last one from that set still needing to whitelist.

 

 

 

 

I'm seeing the same improvement on Slingshot, all are healthy (imgur.com included) except 104.21.16.1.

 

Graphs here: https://ping.mcgrath.nz/smokeping/?target=CloudflareTunnel
It feels like something changed for 104.21.16.1 at the same time as the others, but not a full fix.

 

Thanks @Sounddude for whatever you've made happen!


Sounddude
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  #3334006 21-Jan-2025 09:29
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Kodiack:

 

There's one more issue that I'm personally noticing, btw: Akamai latency is all over the place (using 2d DNS), and I'm seeing dropped packets on IPv6.

 

 

 

 

Depends on how you are doing your testing. If you are testing against a DNS name, then yes I would expect it to be all over the place as the CDN endpoint can change each DNS query.

 

If you lock it down to one IP address it should be stable.




Kodiack
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  #3334025 21-Jan-2025 10:09
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Sounddude:

 

Depends on how you are doing your testing. If you are testing against a DNS name, then yes I would expect it to be all over the place as the CDN endpoint can change each DNS query.

 

If you lock it down to one IP address it should be stable.

 

 

I'm using 2degrees DNS, but sometimes it resolves to IPs that are quite far away (e.g. 140+ ms latency). Other times it will resolve to Auckland or Sydney POPs. The inconsistency seems unusual, and is more along the lines of what I'd expect when using e.g. Cloudflare DNS.

 

On another note, imgur.com is looking super consistent now - I'm impressed with how flat that line is!

 


Sounddude
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  #3334034 21-Jan-2025 10:16
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Kodiack:

 

I'm using 2degrees DNS, but sometimes it resolves to IPs that are quite far away (e.g. 140+ ms latency). Other times it will resolve to Auckland or Sydney POPs. The inconsistency seems unusual, and is more along the lines of what I'd expect when using e.g. Cloudflare DNS.

 

 

Yes thats expected, thats part of Akamais magic sauce. They have their DNS TTL very low and will move the IP's depending on load and other factors that they think are best to serve the customer.

 

You would get the same no matter what DNS server you use. Its very much out of 2degrees control

 

 

 

 

On another note, imgur.com is looking super consistent now - I'm impressed with how flat that line is!

 

 

 

 

 

YAY.


Kodiack
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  #3334037 21-Jan-2025 10:20
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Sounddude:

 

Yes thats expected, thats part of Akamais magic sauce. They have their DNS TTL very low and will move the IP's depending on load and other factors that they think are best to serve the customer.

 

You would get the same no matter what DNS server you use. Its very much out of 2degrees control

 

 

Cheers, that's some good context. I expected some degree of load balancing would be at play, but I'm surprised with just how far away they can sometimes route things. I seem to get some degree of packet loss over IPv6 to Akamai as well, which doesn't appear to happen at all with IPv4. It seems a bit sub-optimal, but also it's nowhere near as disruptive as the issues that have been fixed were. I'm much happier with where things are sitting at present, thanks again for the efforts yesterday. :)


openmedia
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  #3334432 22-Jan-2025 13:16
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So do we have a clear root cause for this and can it be confirmed that it wasn't the DIA filter?

 

I've had to raise 4+ tickets with Orcon for this most of which were closed with "not our problem".





Generally known online as OpenMedia, now working for Red Hat APAC as a Technology Evangelist and Portfolio Architect. Still playing with MythTV and digital media on the side.


 
 
 

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haydenmarsh
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  #3334926 23-Jan-2025 20:40
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I'm not sure if it's at all related, but thought here'd be a good place to bring it up.

 

Downloading Ubuntu 22.04 AppxBundle from Microsoft - the default download location listed here has really slow download speeds (~700KB/s) - with the following for a traceroute.

 

tracert wslstorestorage.blob.core.windows.net

Tracing route to blob.sjc22prdstr10c.store.core.windows.net [20.209.102.193]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms OpenWrt [192.168.1.1]
2 1 ms 1 ms 1 ms v3.cpcwn2-bng1.tranzpeer.net [101.98.0.98]
3 23 ms 28 ms 23 ms ae64-0.ier03.akl30.ntwk.msn.net [104.44.6.112]
4 23 ms 23 ms 23 ms ae68-0.ier01.akl30.ntwk.msn.net [104.44.6.113]
5 25 ms 23 ms 23 ms 51.10.8.168
6 151 ms 160 ms 155 ms 104.44.54.83
7 156 ms 165 ms 152 ms be-5-0.ibr01.maa02.ntwk.msn.net [104.44.18.238]
8 152 ms 155 ms 158 ms be-1-0.ibr01.lax30.ntwk.msn.net [104.44.18.173]
9 152 ms 153 ms 211 ms be-3-0.ibr03.by4.ntwk.msn.net [104.44.28.215]
10 155 ms 150 ms 149 ms ae140-0.icr01.by4.ntwk.msn.net [104.44.22.146]
11 * * * Request timed out.
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.
15 * * ^C

 

Found it on another Microsoft server, traceroute is way better and it downloads at over 11.3MB/s 

tracert wsldownload.azureedge.net

 

Tracing route to cs9.wpc.v0cdn.net [117.18.232.200]

 

over a maximum of 30 hops:

 

1 <1 ms <1 ms <1 ms OpenWrt [192.168.1.1]

 

2 <1 ms 13 ms 5 ms v3.cpcwn2-bng1.tranzpeer.net [101.98.0.98]

 

3 * * * Request timed out.

 

4 45 ms 45 ms 45 ms 117.18.232.200


Sounddude
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  #3336954 29-Jan-2025 10:56
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haydenmarsh:

 

I'm not sure if it's at all related, but thought here'd be a good place to bring it up.

 

Downloading Ubuntu 22.04 AppxBundle from Microsoft - the default download location listed here has really slow download speeds (~700KB/s) - with the following for a traceroute.

 

 

 

 

Unfortunately 2degrees doesn't have any control over what the CDN provider will set as your preferred server. This is all based on DNS and their magic sauce.

 

They don't get it right all the time and might not be the best performing node.

 

Make sure you are using the 2degrees assigned DNS servers for best results.


wipash
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  #3340813 9-Feb-2025 18:40
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Things have gone bad again for Cloudflare as of about 11am on Feb 5, and started to get major packet loss again today.

 

Imgur seems fine though.

 

https://ping.mcgrath.nz/smokeping/?target=CloudflareTunnel.CloudflareTunnel1

 

 

 

 

MTR:

 

                                       Packets               Pings
 Host                                Loss%   Snt   Last   Avg  Best  Wrst StDev 
 1. 172.28.16.1                       0.0%   134    0.2   0.2   0.1   0.3   0.0
 2. 10.0.16.1                         0.0%   134    0.4   0.3   0.3   0.9   0.1
 3. v4.cpcak4-bng1.tranzpeer.net      0.0%   134    2.2   2.0   1.5   3.8   0.5
 4. default-rdns.vocus.co.nz          0.0%   134    2.5   3.5   1.9  44.5   4.4
 5. default-rdns.vocus.co.nz          3.8%   134  612.0 143.9  13.0 864.8 174.2
 6. (waiting for reply)
 7. 124.150.165.62                   55.6%   134  317.2 111.8  38.2 667.5 121.8
 8. 124.150.165.2                    45.1%   134  288.7 147.2  37.7 697.1 168.1
 9. 210.215.88.86                    49.6%   133  607.5 165.4  36.5 619.0 169.8
10. 210.215.88.85                     8.3%   133  652.0 155.7  36.8 717.8 169.0
11. 103-1-230-163.nexon.com.au       42.1%   133  737.0 187.9  38.1 752.6 197.0
12. 13335.syd.equinix.com            48.9%   133  745.5 176.6  40.7 745.5 182.0
13. 108.162.247.77                   59.8%   133  234.9 174.7  38.6 761.1 183.0
14. 104.21.16.1                      52.3%   133  104.6 146.6  37.1 713.4 173.9 

michaelmurfy
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  #3340814 9-Feb-2025 18:43
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wipash:

 

Things have gone bad again for Cloudflare as of about 11am on Feb 5, and started to get major packet loss again today.

 

On Quic:

 

 

I seriously don't understand how it is getting this bad on 2degrees. Mind PM'ing me your Smokeping configuration? I'll chuck this on my instance.

 

 




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Rudster

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  #3340849 9-Feb-2025 21:20

Note testing when load is likely low but I have not seen such a significant increase. Latency has increased between 10-20ms to cloudflare over what I would usually expect though.

 

I'll try testing during the day tomorrow.

 

 


michaelmurfy
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  #3340883 10-Feb-2025 02:38
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Rudster: Note testing when load is likely low but I have not seen such a significant increase. Latency has increased between 10-20ms to cloudflare over what I would usually expect though.

 

I'm more concerned about your route. What is nexon.com.au doing there? CDN's can head over to Australia, sure, that's the nature of them but your route is frankly odd.

 

If we run a RIPE Atlas test on this we can see the majority of probes keep their Cloudflare traffic in NZ. Mercury, One NZ, Prodigi & 2degrees all seem to use the strange route. You can have a look at the results here: https://atlas.ripe.net/measurements/86804615/results 





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wipash
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  #3342228 13-Feb-2025 08:29
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Looks like we might be back to normal again

 

 

 




**edit:

Actually for all except 104.21.32.1

 

 

 

                                      Packets               Pings
 Host                               Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. 172.28.16.1                      0.0%    62    0.1   0.2   0.1   0.4   0.0
 2. 10.0.16.1                        0.0%    62    0.6   0.4   0.3   0.7   0.1
 3. v4.cpcak4-bng1.tranzpeer.net     9.7%    62    1.9   1.9   1.4   3.4   0.4
 4. default-rdns.vocus.co.nz         0.0%    62    2.6   3.4   1.6  21.4   3.1
 5. default-rdns.vocus.co.nz         0.0%    62   12.4  12.5  11.6  15.0   0.7
 6. (waiting for reply)
 7. 124.150.165.62                   0.0%    62   37.0  37.7  36.7  41.9   1.1
 8. 124.150.165.2                    0.0%    62   37.9  37.5  36.4  43.1   1.0
 9. 210.215.88.86                    0.0%    62   36.7  37.0  36.0  45.3   1.2
10. 210.215.88.85                    0.0%    62   35.9  37.2  35.8  72.7   4.6
11. 103-1-230-163.nexon.com.au       0.0%    62   37.3  37.5  36.6  40.3   0.7
12. 13335.syd.equinix.com           17.7%    62   38.0  38.7  37.0  50.7   2.5
13. 108.162.247.87                   0.0%    62   37.3  38.7  36.5  55.9   3.2
14. 104.21.32.1                      0.0%    62   37.4  37.8  36.7  40.7   0.8

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