IPv6 dropping on 2degrees with third party routers

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Geek
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#2122733 9-Nov-2018 14:12

I made those changes to MTU and deleted mss-clamp (mss-clamp6 wasn't set) last night and was surprised when IPv6 was still up the following morning. It didn't last forever unfortunately, IPv6 has stopped working for me after about 16 hours.

I submitted the issue to 2degrees on Wednesday, will see what they say when they get back to me.

Cheers,

Andrew

dfnt

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#2122788 9-Nov-2018 15:04

Bugger, worth a try, but as 2degrees support 1500 MTU pppoe you should keep it that way 👍🏻

michaelmurfy

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#2122868 9-Nov-2018 16:31

I'm not having any IPv6 issues - the only thing that differs from your configuration and my own is the following:

ipv6 {
dup-addr-detect-transmits 1
enable {
}
}

Else, not sure what is causing this. Perhaps try enabling debug logging on the Edgerouter and looking at the logs when IPv6 fails for any clues.

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dfnt

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#2124603 13-Nov-2018 09:30

I think I'm seeing the same issue now too.

After rebooting the EdgeRouter last night I lost ipv6 after a while, then this morning I didn't seem to have ipv6 either

Anyone else still having problems?

llama233

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Geek
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#2124606 13-Nov-2018 09:35

dfnt:

Anyone else still having problems?

Yup, still dropping out after a few hours for me. I've scoured the logs but haven't seen anything that looks like it's related (though I'll be the first to admit I'm not sure what I'm looking for!). I still haven't heard anything from 2degrees regarding the ticket I opened with them on the 7th.

Cheers,

Andrew

dfnt

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#2124610 13-Nov-2018 09:40

If it happens again I'll run a packet capture, but I'm pretty sure all I'll see is ipv6 packets going out and never coming back.

I'd have thought you'd hear back by now, pretty poor

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Benoire

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#2124629 13-Nov-2018 10:13

I'll see what I get when I'm home. I was getting the IPv6 logo on Geekzone yesterday, but at work today and didn't look this morning. I'm running a USG on the latest dev firmware but as its using EdgeOS any issues with the edge router will likely be represented with the USG.

dfnt

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#2124630 13-Nov-2018 10:14

The ipv6 logo was missing on GZ for me, but I should've checked other things before assuming it was a problem.

I'll continue to monitor for now

BlackHand

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Master Geek
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#2124647 13-Nov-2018 10:45

Same here still dropping out after a few hours for me

Taubin

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#2124703 13-Nov-2018 12:51

dfnt:

The ipv6 logo was missing on GZ for me, but I should've checked other things before assuming it was a problem.

I'll continue to monitor for now

I always check ipv6.google.com It will only load over IPV6, so if it refuses to load at all, I know it's dropped completely. It's a bit more reliable for me than using ipv6 tests due to fallover.

ZL2TOY/ZL1DMP

dfnt

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#2124720 13-Nov-2018 13:07

Taubin:

dfnt:

The ipv6 logo was missing on GZ for me, but I should've checked other things before assuming it was a problem.

I'll continue to monitor for now

I always check ipv6.google.com It will only load over IPV6, so if it refuses to load at all, I know it's dropped completely. It's a bit more reliable for me than using ipv6 tests due to fallover.

Yeah, I normally check with http://ipv6-test.com/

The reason I'm not 100% sure I'm having the same issue is I can't remember whether or not I was connected to a VPN before going to sleep last night so Chrome might still have had Geekzone's ipv4 DNS cached

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michaelmurfy

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#2124944 13-Nov-2018 18:58

My IPv6 dropped out today - I'm actually suspecting it is a firmware bug with the Edgerouter so will monitor it further.

But also remember, 2degrees supports the Fritz and while they allow third party routers / devices it doesn't mean they support them. Don't expect them to look into this issue but if I find anything, or if my router drops again I'll hopefully have the logs this time around to check what is causing it.

Tinkerisk

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#2125051 13-Nov-2018 20:40

It's nothing linked to 2degrees only.

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vulcannz

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#2125053 13-Nov-2018 20:44

Mine dropped out tonight, I'm not running an Edgerouter.

I tried pinging 2404:6800:4006:808::200e and several other addresses, I can see my packets egressing the firewall X0 is LAN, X1:V10 is the PPPoE connection). The ICMP packets are leaving but nothing is coming back.

I have restarted the v6 PPPoE a couple of times, tried renewing the lease (and it does get a lease but strangle the expiry time doesn't change). I can see the upstream Juniper route in the ND table. One thing I have not done is restarted the box, I'll do that later tonight.

This may indicate it is not an Edgerouter issue.

*Packet number: 1*
Header Values:
Bytes captured: 94, Actual Bytes on the wire: 94
Packet Info(Time:2018/11/13 20:34:53.608):
in:X0*(interface), out:X1:V10, Forwarded, 1:2)
Ethernet Header
Ether Type: IPV6(0x86dd), Src=[d0:50:99:47:ce:d2], Dst=[c0:ea:e4:af:77:d4]
IPv6 Packet Header
Next header: ICMPV6(0x3a), Src=[2406:e001:2:3901::248], Dst=[2404:6800:4006:808::200e]
ICMP Packet Header
ICMP Type = 128(ECHO_REQ), ICMP Code = 0, ICMP Checksum = 41324
Value:[0]
Hex and ASCII dump of the packet:
c0eae4af 77d4d050 9947ced2 86dd6000 00000028 3a802406 *....w..P.G....`....(:.$.*
e0010002 39010000 00000000 02482404 68004006 08080000 *....9........H$.h.@.....*
00000000 200e8000 a16c0001 00186162 63646566 6768696a *.... ....l....abcdefghij*
6b6c6d6e 6f707172 73747576 77616263 64656667 6869 *klmnopqrstuvwabcdefghi *

dfnt

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#2125068 13-Nov-2018 21:33

michaelmurfy:

My IPv6 dropped out today - I'm actually suspecting it is a firmware bug with the Edgerouter so will monitor it further.

But also remember, 2degrees supports the Fritz and while they allow third party routers / devices it doesn't mean they support them. Don't expect them to look into this issue but if I find anything, or if my router drops again I'll hopefully have the logs this time around to check what is causing it.

While true, this has all started since they upgraded their BNG's though

2degrees supports ipv6*

*only on the Fritzbox :P

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