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domodial
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IPV6 was working but has now stopped

Wed Apr 21, 2021 8:26 am

Hello,

I am asking for your help on ipv6 which was working but has now stopped.
If you have any ideas for testing as I suspect something is broken with my ISP doing a recent ipv6 deployment.

First of all the modem doesn't work like most of the setups I see on the forum.
We do not use PPPoe

The modem sends the identifiers over the network to the box.
We do not know our credentials.

The box cannot be in Bridge.
The only functionality is DMZ mode.

I am in IPV4 with Mikrotik and in DMZ, everything is OK.
I made the settings for IPV6 in DMZ as well and everything was OK, but for 7 days I have been tearing my hair out because the Internet link no longer works.
The IPV6 distribution on the devices is OK.
I can ping my machines locally but I can no longer go out on the internet.
From the Mikrotik RB4011 router I can ping google ipv6.

I am currently using the basic ipv6 filters from a reset of the router configuration but nothing better.

This is how the modem works (DMZ only)

BOX
I receive a fixed IP with a / 56 prefix
In the DMZ option I get a subnet / 64 with a gateway IP
SLAAC is activated on the box.
Capture.PNG
RB4011
In mikrotik I added an address like this: 2a02: xxxx: xxx: x302 :: 1/64
From there I could have an ipv6 address on my machines and go out to the internet.
The ipv6 test sites were OK on the fact that I am good at IPV6.
Capture3.PNG
Capture2.PNG
Today I can no longer ping the internet.
Windows indicates that there is no internet connection.
I don't see any ipv6 dhcp.

Can you give me help or search ?
this configuration is exactly the same when it was working.
Capture4.PNG
Thank you
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 1:41 pm

I can reach your router, check twice the config:
C:\WINDOWS\system32>tracert 2a02:8428:654:a302::1

Traccia instradamento verso 2a02-8428-0654-a302-0000-0000-0000-0001.rev.sfr.net [2a02:8428:654:a302::1]
su un massimo di 30 punti di passaggio:

  1    11 ms    <1 ms    <1 ms  2002:b90b:2347:1::1
  2    41 ms    40 ms    41 ms  2002:9164:bc1d::1
  3    41 ms     *       41 ms  2001:610:188:140:145:100:188:253
  4    38 ms    42 ms    41 ms  2001:610:188:a0:145:97:20:150
  5    44 ms    42 ms    40 ms  eae22-1201.asd066a-jnx-01.surf.net [2001:610:fc7:0:145:145:14:14]
  6    39 ms    37 ms    48 ms  2001:610:e00:2::294
  7    40 ms    38 ms    43 ms  2001:610:e00:1:145:145:128:4
  8    49 ms    61 ms    55 ms  2001:7f8:1::a501:5557:1
  9     *        *        *     Richiesta scaduta.
 10     *        *        *     Richiesta scaduta.
 11     *        *        *     Richiesta scaduta.
 12     *        *       54 ms  2a02-8400-0000-0003-0000-0000-0000-625d.rev.sfr.net [2a02:8400:0:3::625d]
 13    58 ms    60 ms    57 ms  2a02-8428-0654-a302-0000-0000-0000-0001.rev.sfr.net [2a02:8428:654:a302::1]
 
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domodial
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 1:47 pm

wow! what's going on here then ?
I can't get out, and is it possible to ping my address ?
What am I doing wrong, I can no longer understand ... Anyway thank you for taking the time to watch! it is very pleasant to you.
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 1:49 pm

I have been looking at the setup for 5 days without understanding what is wrong. I'm desperate
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 1:52 pm

I have been looking at the setup for 5 days without understanding what is wrong. I'm desperate
Sorry, but I'm not able to help you on IPv6 because actually i do not use this, I just "tracert" it on windows :((
I just remember one thing:
On windows put dns on hand because windows do not read dns.
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 1:53 pm

I have been looking at the setup for 5 days without understanding what is wrong. I'm desperate
Have you tried rebooting the router? I've come across a glitch once or twice where router advertisements stop being sent and a reboot has corrected the issue. It is very rare though - last time it happened to me was over a year ago.
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 1:57 pm

(P.S.: The net is very nice... One Italian than try to help one Française wit English on Latvian device maded with Taiwanese components...)
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 1:57 pm

yes i restarted it several times, i will try to shut it down completely. For windows I also tried to force the dns but nothing better. It's totally strange, under windows I have had surprises in the past but the mac osx which are less capricious cannot go on the internet either.
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 2:07 pm

start from this config, remove other ipv6 address on /ipv6 address and the other manual ipv6 route on /ipv6 route:
/ipv6 route
add distance=10 gateway=>>>*** source ipv6 interface ***<<<
add distance=1 dst-address=2000::/3 gateway=2a02:8428:654::

/ipv6 address
add address=2a02:8428:654:a302:1::1 interface=ether2-LAN
add address=2a02:8428:654:a301:7fd1:ba6f::/56 advertise=no interface=>>>*** source ipv6 interface ***<<<

/ipv6 nd
set [ find default=yes ] advertise-dns=yes advertise-mac-address=yes interface=all managed-address-configuration=no other-configuration=no
Last edited by rextended on Wed Apr 21, 2021 2:27 pm, edited 4 times in total.
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 2:16 pm

my previous post has modified for typo, check again
 
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domodial
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 2:22 pm

it does not progress better :(
Capture.PNG
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 2:25 pm

it does not progress better :(
Capture.PNG
use out inerface on gateway, not IPv6 ip on ::/0 route, check twice my modified post, please
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 2:30 pm

on script >>>*** source ipv6 interface ***<<< must be like "ether1-WAN" (I haved use your ether2-LAN as example)
but I see you have also one bridge, for what?
if the ether2-LAN is part of the bridge, you must assign the ip to the bridge, not to singe ethernet
if the bridge are the "WAN", you must use "bridge" as >>>*** source ipv6 interface ***<<<
/ipv6 route
add distance=10 gateway=>>>*** source ipv6 interface ***<<<
add distance=1 dst-address=2000::/3 gateway=2a02:8428:654::

/ipv6 address
add address=2a02:8428:654:a302:1::1 interface=ether2-LAN
add address=2a02:8428:654:a301:7fd1:ba6f::/56 advertise=no interface= >>>*** source ipv6 interface ***<<<

/ipv6 nd
set [ find default=yes ] advertise-dns=yes advertise-mac-address=yes interface=all managed-address-configuration=no other-configuration=no
Last edited by rextended on Wed Apr 21, 2021 2:33 pm, edited 2 times in total.
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 2:31 pm

a progression
Capture2.PNG
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 2:32 pm

The bridge are ether2-LAN
ether1 are WAN
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 2:34 pm

paste this on terminal:
/ipv6 route
remove [find where dynamic=no]
add distance=10 gateway=ether1
add distance=1 dst-address=2000::/3 gateway=2a02:8428:654::

/ipv6 address
remove [find]
add address=2a02:8428:654:a302:1::1 interface=bridge
add address=2a02:8428:654:a301:7fd1:ba6f::/56 advertise=no interface=ether1

/ipv6 nd
set [ find default=yes ] advertise-dns=yes advertise-mac-address=yes interface=all managed-address-configuration=no other-configuration=no
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 2:38 pm

I'm so sorry I couldn't do it, I followed the procedure, but I have no result.
Capture3.PNG
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 2:44 pm

last try:
/ipv6 route
remove [find where dynamic=no]
add distance=10 gateway=ether1
add distance=1 dst-address=2000::/3 gateway=2a02:8428:654::

/ipv6 address
remove [find]
add address=2a02:8428:654:a302:1::1 interface=bridge
add address=2a02:8428:654:a302::/16 advertise=no interface=ether1

/ipv6 nd
set [ find default=yes ] advertise-dns=yes advertise-mac-address=yes interface=all managed-address-configuration=no other-configuration=no
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 2:50 pm

Try to ping google dns from routerboard and from windows:

2001:4860:4860::8888
 
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domodial
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 3:04 pm

Capture4.PNG
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 3:06 pm

this is why i am going crazy
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 3:14 pm

this is why i am going crazy
try to assign the ip 2a02:8428:654:a301:7fd1:ba6f::/56 or the full 2a02:8428:654:a301:7fd1:ba6f:xxxxxxxxx to the bridge
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 3:24 pm

nothing better, probably there is something broken on my ISP's network. Before it worked with just the address in 302 :: 1/64 and nothing else.
The modem has also been changed, it is new.
it seems that there is no advertisement as if SLAAC is not working.
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 3:27 pm

nothing better, probably there is something broken on my ISP's network. Before it worked with just the address in 302 :: 1/64 and nothing else.
The modem has also been changed, it is new.
it seems that there is no advertisement as if SLAAC is not working.
Sorry, I hope you solve the problem in short time.
Have a nice day.
 
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Re: IPV6 was working but has now stopped

Wed Apr 21, 2021 3:35 pm

Thanks again for spending time with me ! Hello Italy ;-)

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