Facebook Routing on Quic?

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nbroad

320 posts

Ultimate Geek

#317893 25-Nov-2024 08:54

Hi Quic and GZ,

I switched to Quic on Friday which was completely painless and all seems good so far.

I am however seeing some funny routing to Facebook, almost like it's flapping between NZ and AU.

Apologies if this has been discussed before, but was just interested to hear if this is a known issue.

Cheers.

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#3312538 25-Nov-2024 09:00

I'm seeing something similar

But michaelmurfy isn't: https://smokeping.interwebz.nz/smokeping/?target=InternetHosts.Facebookv4

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3l3m3nt

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#3312539 25-Nov-2024 09:04

If you're not using Quic's DNS servers, you'll have to expect this. I'm quite certain that Facebook ignores edns. While facebook does periodically reroute users for maintenance/load, if you want a more consistent ping to services including facebook then I'd suggest using Quic's resolvers, otherwise this will always happen.

For contrast, here's my smokeping on Quic using their resolvers, through a pi hole of course :)

https://smokeping.dalleyfamily.net/smokeping/?target=DualStack.Facebookv4

Dunedin, NZ
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Dunedin Live Webcam (4K) | Quic Smokepings

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nbroad

320 posts

Ultimate Geek

#3312540 25-Nov-2024 09:04

Interesting.. your pattern is similar, but times don't match exactly.

My target is just facebook.com and IPV4

https://smokeping.broadnz.com/smokeping/?target=InternetSites.Facebook

nbroad

320 posts

Ultimate Geek

#3312541 25-Nov-2024 09:09

3l3m3nt:

If you're not using Quic's DNS servers

I'm using the Quic assigned DNS servers:

Dynamic Servers

103.250.90.8

202.179.141.8

2620:fe::fe

evilonenz

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Ultimate Geek

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#3312542 25-Nov-2024 09:10

I suspect @3l3m3nt is on to something here. I'm also using Quic DNS, and I'm not seeing anything like you both are.

Facebook v4 & Facebook v6

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3l3m3nt

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#3312544 25-Nov-2024 09:11

Now this is getting interesting! Could you please post up a traceroute/mtr?

Dunedin, NZ
Quic Broadband | Rocket 1G/1G Hyperfibre (Yes, you read that right!)
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Referral Links:
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michaelmurfy

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#3312545 25-Nov-2024 09:12

nbroad:

I'm using the Quic assigned DNS servers:

Dynamic Servers 103.250.90.8 202.179.141.8 2620:fe::fe

That IPv6 address is not Quic’s:

Primary: 103.250.90.8 / 2407:8b00:f101:10::10
Secondary: 202.179.141.8 / 2407:8b00:f102:10::10

Michael Murphy | https://murfy.nz
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nbroad

320 posts

Ultimate Geek

#3312550 25-Nov-2024 09:28

michaelmurfy:

That IPv6 address is not Quic’s:

Primary: 103.250.90.8 / 2407:8b00:f101:10::10
Secondary: 202.179.141.8 / 2407:8b00:f102:10::10

the smokeping target is IPV4 though, so if I do have an incorrect IPV6 server it wouldn't have any effect?

I just have 'use peer DNS' ticked in ipv6 dhcp-client.. or CLI is this (Mikrotik)

/ipv6 dhcp-client
add add-default-route=yes interface=vlan10-internet pool-name=isp-ipv6pool pool-prefix-length=56 request=prefix

C:\Users\nbroad>tracert -4 facebook.com

Tracing route to facebook.com [31.13.78.35]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms router [192.168.2.1]
2 3 ms 6 ms 3 ms bng1-wlg1.vetta.net [103.243.102.46]
3 3 ms 3 ms 6 ms ae1-251.pe1-wlg1.vetta.net [103.139.184.132]
4 13 ms 15 ms 14 ms ae0-102.core1-akl2.vetta.net [103.243.102.230]
5 64 ms 72 ms 35 ms as32934.akl.ix.nz [43.243.21.119]
6 12 ms 14 ms 15 ms po202.asw04.akl1.tfbnw.net [129.134.41.22]
7 12 ms 14 ms 15 ms psw02.akl1.tfbnw.net [129.134.82.4]
8 14 ms 15 ms 15 ms 163.77.195.35
9 14 ms 14 ms 14 ms edge-star-mini-shv-01-akl1.facebook.com [31.13.78.35]

Trace complete.

3l3m3nt

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#3312552 25-Nov-2024 09:34

Ah, you're on the same BNG and murf and I so I doubt it's routing.

You could try disabling use peer dns, but iirc for whatever reason on my tik didn't stop it receiving upstream dns servers. I also can't remember what I did to fix it, but give it a whirl and see if it makes a difference :)

Dunedin, NZ
Quic Broadband | Rocket 1G/1G Hyperfibre (Yes, you read that right!)
Dunedin Live Webcam (4K) | Quic Smokepings

Referral Links:
Quic (use R282731EPGJMG on checkout for free setup, and to help me pay for my fast internet addiction)
Contact Energy (use FRTDD2R for $100 credit)

nbroad

320 posts

Ultimate Geek

#3312560 25-Nov-2024 09:43

that ipv6 DNS is quad9... I don't have it configured on the router, so is it being handed to the ipv6 dhcp-client by Quic?

C:\Users\nbroad>tracert 2620:fe::fe

Tracing route to dns.quad9.net [2620:fe::fe]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms 2407:8b00:116c:7400::
2 * * * Request timed out.
3 3 ms 6 ms 3 ms ae1-251.pe1-wlg1.vetta.net [2407:8b00:1::17:46:1]
4 13 ms 15 ms 15 ms ae0-101.core1-akl1.vetta.net [2407:8b00:1::a1c1:17:1]
5 * * * Request timed out.
6 15 ms 15 ms 15 ms as42.akl.ix.nz [2001:7fa:11:6:0:2a:0:1]
7 14 ms 14 ms 14 ms dns.quad9.net [2620:fe::fe]

Trace complete.

michaelmurfy

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#3312575 25-Nov-2024 10:17

Manually update your DNS with the above (also on Quic's support page) and see how that helps.

So, even though that's an IPv6 DNS your router / clients will also use this for IPv4 endpoints. IPv6 DNS is not exclusively for IPv6.

michaelmurfy

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#3312578 25-Nov-2024 10:20

Further expanding on this - with me, on Quic's DNS I get 31.13.78.35 (NZ) and for Quad9's IPv6 DNS I get 157.240.8.35 (Sydney).

nbroad

320 posts

Ultimate Geek

#3312580 25-Nov-2024 10:22

Thanks.. will try this:

/ipv6 dhcp-client
add add-default-route=yes interface=vlan10-internet pool-name=isp-ipv6pool pool-prefix-length=56 request=prefix use-peer-dns=no

/ip dns
set allow-remote-requests=yes servers=2407:8b00:f101:10::10,2407:8b00:f102:10::10

mentalinc

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#3312645 25-Nov-2024 11:12

Also just moved the IPv6 DNS over to Quic (when did they go live?) and away from Cloudflare.

Was using Quic for IP4 already.

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BMarquis

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#3312650 25-Nov-2024 11:43

As another datapoint. I'm using cloudflare for DNS... IPv4 only network.

Edit - most of the delay spikiness is because I'm not prioritising ICMP/smokeping over everything else my server and that interface is doing :)

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