2degrees: Changes to IP Addresses (CGNAT)

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#2315454 12-Sep-2019 09:49

NickMack:

Kodiack:

I'm on a static IP, but would the changes for this have affected routing at all? I'm in Wellington and have noticed that all of my traffic is now being routed via Auckland. This means that I have mates that have lower latency from Dunedin to Wellington than I do from Wellington to Wellington. My bandwidth has also taken a significant hit.

I've noticed that I also appear to be connecting to Google and Geekzone via IPv4 instead of IPv6. I still have a public IPv6 address and it is used for some sites, but not all. What gives?

Here's a result to a local speed test server:

Seeing similar results across all of them. Latency used to be 1-2 ms, downstream bandwidth used to be ~940 Mbps, and upstream bandwidth used to be 400+ Mbps.

Here's a couple of traceroutes to local servers:

Tracing route to speedtest.xtreme.net.nz [2401:7c00::30]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms fritz.box [2406:e001:2:9e01:f2b0:14ff:fec0:7f6b]
2 2 ms 1 ms 1 ms 2406:e000:2801::30
3 10 ms 9 ms 31 ms 2001:7fa:11:6:0:5c67:0:1
4 19 ms 19 ms 19 ms 2001:7fa:11:6:0:47e0:0:1
5 20 ms 19 ms 19 ms speedtest.xtreme.net.nz [2401:7c00::30]

Tracing route to fast-dog.wlg.acsdata.co.nz [114.110.33.94]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms fritz.box [192.168.178.1]
2 2 ms 1 ms 1 ms 65.7.69.111.static.snap.net.nz [111.69.7.65]
3 11 ms 10 ms 10 ms snap1.ape.nzix.net [192.203.154.120]
4 10 ms 10 ms 10 ms acsdata.ape.nzix.net [192.203.154.117]
5 18 ms 18 ms 18 ms te0-0-0-1537.v4wlg0.acsdata.co.nz [103.239.11.1]
6 19 ms 18 ms 18 ms vlan1091.wlg0fw.acsdata.co.nz [202.21.136.178]
7 19 ms 18 ms 19 ms fast-dog.wlg.acsdata.co.nz [114.110.33.94]

All-in-all, very appalling results and a drastic decrease in service quality.

Hiya,

Suspect there's more than one issue here - The routing issue after investigation is due to the route being advertised by WIX peering exchange and based on the current configuration it's not hitting the route reflectors and being updated in the local table on the BNG (where subscribers terminate to). An Engineer is looking into this now.

The speed issue could be a number of things, my suggestion is you follow normal investigation and work through this link - https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=239862 as it's highly likely to be localised.

Nick

Update - Issue identified, Change is written, QA'ed and will be deployed in change window early tomorrow morning for routing issue.

Nick.

https://nick.mackechnie.co.nz | NZ ISP latency monitoring - https://smokeping.thenet.gen.nz

NickMack

962 posts

Ultimate Geek

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#2316994 13-Sep-2019 09:21

NickMack:

NickMack:

Kodiack:

I'm on a static IP, but would the changes for this have affected routing at all? I'm in Wellington and have noticed that all of my traffic is now being routed via Auckland. This means that I have mates that have lower latency from Dunedin to Wellington than I do from Wellington to Wellington. My bandwidth has also taken a significant hit.

I've noticed that I also appear to be connecting to Google and Geekzone via IPv4 instead of IPv6. I still have a public IPv6 address and it is used for some sites, but not all. What gives?

Here's a result to a local speed test server:

Seeing similar results across all of them. Latency used to be 1-2 ms, downstream bandwidth used to be ~940 Mbps, and upstream bandwidth used to be 400+ Mbps.

Here's a couple of traceroutes to local servers:

Tracing route to speedtest.xtreme.net.nz [2401:7c00::30]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms fritz.box [2406:e001:2:9e01:f2b0:14ff:fec0:7f6b]
2 2 ms 1 ms 1 ms 2406:e000:2801::30
3 10 ms 9 ms 31 ms 2001:7fa:11:6:0:5c67:0:1
4 19 ms 19 ms 19 ms 2001:7fa:11:6:0:47e0:0:1
5 20 ms 19 ms 19 ms speedtest.xtreme.net.nz [2401:7c00::30]

Tracing route to fast-dog.wlg.acsdata.co.nz [114.110.33.94]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms fritz.box [192.168.178.1]
2 2 ms 1 ms 1 ms 65.7.69.111.static.snap.net.nz [111.69.7.65]
3 11 ms 10 ms 10 ms snap1.ape.nzix.net [192.203.154.120]
4 10 ms 10 ms 10 ms acsdata.ape.nzix.net [192.203.154.117]
5 18 ms 18 ms 18 ms te0-0-0-1537.v4wlg0.acsdata.co.nz [103.239.11.1]
6 19 ms 18 ms 18 ms vlan1091.wlg0fw.acsdata.co.nz [202.21.136.178]
7 19 ms 18 ms 19 ms fast-dog.wlg.acsdata.co.nz [114.110.33.94]

All-in-all, very appalling results and a drastic decrease in service quality.

Hiya,

Suspect there's more than one issue here - The routing issue after investigation is due to the route being advertised by WIX peering exchange and based on the current configuration it's not hitting the route reflectors and being updated in the local table on the BNG (where subscribers terminate to). An Engineer is looking into this now.

The speed issue could be a number of things, my suggestion is you follow normal investigation and work through this link - https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=239862 as it's highly likely to be localised.

Nick

Update - Issue identified, Change is written, QA'ed and will be deployed in change window early tomorrow morning for routing issue.

Nick.

Hiya All,

Update - This change was deployed this morning, issue resolved here. We also identified a few other places where we need to deploy this change and we are working through this and will deploy according.

Nick.

https://nick.mackechnie.co.nz | NZ ISP latency monitoring - https://smokeping.thenet.gen.nz

CutCutCut

1039 posts

Uber Geek

#2317001 13-Sep-2019 09:36

timmmay:

2degrees have resolved my issue so I'm happy staying with them.

Moving to CG-Nat should free up massive numbers of IPs shouldn't it? That should fix the situation of running low?

How did you manage to resolve the issue, through the helpdesk? Did they issue you a static IP or just leave you off the CGNAT changeover?

I reached out to the 2degrees rep here but never heard anything back.

EDIT-Oh no I was wrong, I do have a message from 2degrees, hopefully they can help me out.

Kodiack

709 posts

Ultimate Geek

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#2317002 13-Sep-2019 09:36

I can confirm the fix is working. Tested latency on my phone before heading out and it's back to the low and excellent values I've come to expect. I'll retest a bit more on desktop this evening, but I have a feeling that it's back to 100%. Thanks for the communication and fix!

ethanbmnz

138 posts

Master Geek

#2317451 13-Sep-2019 23:10

I've been on CGNAT for a week and a half. I haven't noticed a difference in my internet (latency and throughput appears the same), other than CityLink's webcams (wixcam.citylink.co.nz) resulting in TCP reset packets sent, and idle SSH sessions (no terminal activity, no keepalive packets sent) to IPv4 hosts dying after 5-10 minutes. (I've now configured SSH to send keepalives every minute so the sessions don't die anymore)

It would be nice to be able to choose between a CGNAT IP and a public (dynamic) IP, similar to selecting between internet and direct APNs on mobile data. (If this already exists, please excuse my ignorance)

michaelmurfy

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#2317452 13-Sep-2019 23:17

ethanbmnz:

I've been on CGNAT for a week and a half. I haven't noticed a difference in my internet (latency and throughput appears the same), other than CityLink's webcams (wixcam.citylink.co.nz) resulting in TCP reset packets sent, and idle SSH sessions (no terminal activity, no keepalive packets sent) to IPv4 hosts dying after 5-10 minutes. (I've now configured SSH to send keepalives every minute so the sessions don't die anymore)

It would be nice to be able to choose between a CGNAT IP and a public (dynamic) IP, similar to selecting between internet and direct APNs on mobile data. (If this already exists, please excuse my ignorance)

Citylinks webcams have been mostly down lately (confirmed on multiple connections). Also, use Mosh, it is great! https://mosh.org/

Michael Murphy | https://murfy.nz
Referral Links: Quic Broadband (use R122101E7CV7Q for free setup)

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CutCutCut

1039 posts

Uber Geek

#2325109 26-Sep-2019 10:16

2degreesCare:

Hi All,

Just an update.

Our phased approach to CG-NAT is actually going quite well. Majority of our customers haven't noticed any change however we understand alot of you will.
If you have any concerns with your broadband service -specifically the impact CG-NAT will have on your setup please get in touch via PM and we’ll talk you through the options we have. ^SW

Hi @2degreescare, I sent through the requested details a couple of weeks ago, are you able to find an option for me?

Equinox IT

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MCD

27 posts

Geek

#2325417 26-Sep-2019 16:13

Hi,

I recently noticed that my DDNS set up (router to ZoneEdit) on my 2degrees connection was no longer working. After quite a bit of digging around I came across this Geekzone thread that let me know what was going on...

I'm surprised and disappointed that this was not communicated to your customers, since I ended up wasting quite a bit of time troubleshooting and searching for solutions.

What are my options from here (please don't say $120 p/a for a static IP)?

I PM'd this issue, along with my account information on 17/09/19.

Thanks!

2degreesCare:

Hi All,

Just an update.

Our phased approach to CG-NAT is actually going quite well. Majority of our customers haven't noticed any change however we understand alot of you will.
If you have any concerns with your broadband service -specifically the impact CG-NAT will have on your setup please get in touch via PM and we’ll talk you through the options we have. ^SW

michaelmurfy

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#2325628 26-Sep-2019 22:02

Everyone: this is an unofficial support medium for 2degrees. If you want to discuss options you should phone them. One of my friends did just did and found them to be both very helpful and quick to resolve the issue.

davidcole

6029 posts

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#2339996 18-Oct-2019 08:48

Hmm looks like I was moved over to cgnat overnight....I didn't know about this thread before hand...and after reading through it, I saw mention of "I'm sure they'll notify people" Uh nope.....suddenly any inbound connection I had is dead....and first I heard of it was when asking about the address my USG was reporting my wan, and what external web sites were reporting (Thanks @kyhwana)

Pretty crappily handled if you ask me.

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JohnFlower

51 posts

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#2340409 18-Oct-2019 23:32

Eh, my bill is due in 2 days, so I guess I'll be looking for a new isp over the weekend... Thanks for not letting us know about these changes~ And 120NZD a year for a static ip? lmao

michaelmurfy

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#2340414 19-Oct-2019 00:04

JohnFlower:

Eh, my bill is due in 2 days, so I guess I'll be looking for a new isp over the weekend... Thanks for not letting us know about these changes~ And 120NZD a year for a static ip? lmao

Do you have a valid reason for needing a public IP? Also, did you phone them to be told this? As they've stated earlier on here, they're sorting customers on a case-by-case basis but many people simply don't need a public IP.

But look at it from another point of view. I can see why customers were not notified by this change. IPv4 addressing is very, very expensive these days and if they notified customers then they'll have customers phone through not understanding what it means, or thinking they need it when really they don't. Sorting it for those few customers who do need it (like for example myself who has services hosted) on a case-by-case basis does make sense. There is more of a PR disaster notifying customers of these things - most of their customer-base likely doesn't even know what an IP address is and just want their "WiFi" to work so there is no need to confuse these customers with terms they don't understand.

This is why when Trustpower implemented CG-NAT a few years ago we didn't really hear anything either. I am sure other ISP's have implemented it on the quiet also (or are about to) as in reality this is what is required as IPv4 space is both expensive, and limited.

Tinkerisk

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#2340440 19-Oct-2019 03:33

michaelmurfy: Sorting it for those few customers who do need it (like for example myself who has services hosted) on a case-by-case basis does make sense. There is more of a PR disaster notifying customers of these things - most of their customer-base likely doesn't even know what an IP address is and just want their "WiFi" to work so there is no need to confuse these customers with terms they don't understand.

With other words, changing a law without any notice is only to prevent confusion 'cause most of the people will not understand it's content (not even by chance)? Funny.

Out of interest: Do you pay for your static IP?

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Handle9

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#2340441 19-Oct-2019 04:02

Tinkerisk:
michaelmurfy: Sorting it for those few customers who do need it (like for example myself who has services hosted) on a case-by-case basis does make sense. There is more of a PR disaster notifying customers of these things - most of their customer-base likely doesn't even know what an IP address is and just want their "WiFi" to work so there is no need to confuse these customers with terms they don't understand.

With other words, changing a law without any notice is only to prevent confusion 'cause most of the people will not understand it's content (not even by chance)? Funny.

Out of interest: Do you pay for your static IP?

Treating customers like mushrooms isn't a way to build trust or loyalty, especially when those affected are likely to be reasonably seriously impacted and very vocal about it.

This was never good news but treating customers like you respect them is usually a good idea. This reeks of "this is easier for us" rather than considering customers.

JohnFlower

51 posts

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#2340485 19-Oct-2019 10:56

michaelmurfy:

Do you have a valid reason for needing a public IP?

Yes. And I'd prefer to keep my dynamic ip thanks~

But look at it from another point of view. I can see why customers were not notified by this change. IPv4 addressing is very, very expensive these days and if they notified customers then they'll have customers phone through not understanding what it means, or thinking they need it when really they don't. Sorting it for those few customers who do need it (like for example myself who has services hosted) on a case-by-case basis does make sense. There is more of a PR disaster notifying customers of these things - most of their customer-base likely doesn't even know what an IP address is and just want their "WiFi" to work so there is no need to confuse these customers with terms they don't understand.

You might be able to see it this way, but this is still a breaking change. Whether people notice a change or not is irrelevant. All customers should be notified... It's the right thing to do if you even remotely value the people giving you money.

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