can't see route(s)/address for ipv6/slaac

RobstarUSA · Fri Mar 05, 2021 11:24 pm

Hi all,

I'm running 6.48.1 on an RB2011.

Where can I see my gateway, DNS, etc ? I'm just starting setup and while I can ping ipv6.google.com by IP, I can't seemy address:

[admin@MikroTik] /ipv6 dhcp-client> /ipv6 address print
Flags: X - disabled, I - invalid, D - dynamic, G - global, L - link-local 
 #    ADDRESS                                     FROM-POOL INTERFACE                                                                ADVERTISE
 0 DL fe80::d6ca:6dff:fe31:ab36/64                          bridge1                                                                  no       
[admin@MikroTik] /ipv6 dhcp-client> /ipv6 route print
Flags: X - disabled, A - active, D - dynamic, C - connect, S - static, r - rip, o - ospf, b - bgp, U - unreachable 
 #      DST-ADDRESS              GATEWAY                  DISTANCE
[admin@MikroTik] /ipv6 dhcp-client> /ping address=2607:f8b0:4009:805::200e
  SEQ HOST                                     SIZE TTL TIME  STATUS                                                                          
    0 2607:f8b0:4009:805::200e                   56 119 11ms  echo reply                                                                      
    1 2607:f8b0:4009:805::200e                   56 119 13ms  echo reply                                                                      
    2 2607:f8b0:4009:805::200e                   56 119 16ms  echo reply                                                                      
    3 2607:f8b0:4009:805::200e                   56 119 10ms  echo reply                                                                      
    4 2607:f8b0:4009:805::200e                   56 119 12ms  echo reply                                                                      
    5 2607:f8b0:4009:805::200e                   56 119 13ms  echo reply                                                                      
    sent=6 received=6 packet-loss=0% min-rtt=10ms avg-rtt=12ms max-rtt=16ms 
[admin@MikroTik] /ipv6 dhcp-client>

StubArea51 · Fri Mar 05, 2021 11:34 pm

These two should get you what you need. Most of what you're looking for will be in the ipv6 menu

ip dns print

and

ipv6 address print

RobstarUSA · Fri Mar 05, 2021 11:38 pm

These two should get you what you need. Most of what you're looking for will be in the ipv6 menu
Code: Select all
ip dns print
and
Code: Select all
ipv6 address print

/ipv6 address print is only showing my link-local, not the slaac aquired address. the /ipvt route print also isn't showing me a default route, but I can ping ipv6.google.com. Very odd. Not sure if this is a bug or I'm looking in the wrong place.

StubArea51 · Fri Mar 05, 2021 11:42 pm

That's definitely not normal, when I issue the same command on my home or office router which are both dual stack, I get the global unicast addresses and the default route.

I would recommend downgrading to the LTS version 6.47.9 and see if the issue persists.

RobstarUSA · Fri Mar 05, 2021 11:44 pm

That's definitely not normal, when I issue the same command on my home or office router which are both dual stack, I get the global unicast addresses and the default route.

I would recommend downgrading to the LTS version 6.47.9 and see if the issue persists.

Are you using slaac, dhcpv6, or statics for ipv6? I will try the downgrade & see how that goes.

Thank you!

RobstarUSA · Sat Mar 06, 2021 12:13 am

That's definitely not normal, when I issue the same command on my home or office router which are both dual stack, I get the global unicast addresses and the default route.

I would recommend downgrading to the LTS version 6.47.9 and see if the issue persists.
Are you using slaac, dhcpv6, or statics for ipv6? I will try the downgrade & see how that goes.

Thank you!

Downgrade did not fix this, unfortunately.

sindy · Sat Mar 06, 2021 12:31 am

When the Mikrotik itself acquires its own global IPv6 address using SLAAC, it does not show it. A default IPv6 route may not show as dst-address=::/0, it may show as dst-address=2000::/3 and the gateway may be a link-local address. Or maybe it doesn't show at all in SLAAC case, can't check right now.

There is a trick to learn the own global address in that case.

RobstarUSA · Sat Mar 06, 2021 5:34 am

When the Mikrotik itself acquires its own global IPv6 address using SLAAC, it does not show it. A default IPv6 route may not show as dst-address=::/0, it may show as dst-address=2000::/3 and the gateway may be a link-local address. Or maybe it doesn't show at all in SLAAC case, can't check right now.

There is a trick to learn the own global address in that case.

Ok, is this a known defect? Anyone know if Microtik has plans to fix this?

sindy · Sat Mar 06, 2021 9:18 am

Anyone know if Microtik has plans to fix this?

It's not broken according to Mikrotik. In an ideal IPv6 world, routers do not acquire their global addresses using SLAAC. So the ability of RouterOS to do so is kind of a bonus functionality.

Another post confirms that in this situation, the default route is not shown either.

can't see route(s)/address for ipv6/slaac

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