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astounding
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Joined: Tue Dec 16, 2008 12:17 am

IPv6 default route problems on a 750G on World IPv6 Day

Thu Jun 09, 2011 3:44 am

Hi,

I've got a dual-stack (IPv4 and IPv6) set-up at a location that has two upstream connections. IPv4 stuff works just fine with static routes. Sometimes IPv6 works too. Except when it doesn't.

Device: 750G
Firmware: 2.29
Software version: 5.4

[user@location] /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
0 A S ::/0 2678:dead:c007:ffff::1 1
1 S ::/0 2678:dead:beef:ffff::1 2

See, there are two default IPv6 routes. The Mikrotik 750g device can even ping the gateway IPs on both. However, the 750G upon booting/start-up DOES NOT ROUTE IPv6 PACKETS using the default routes.

IF, however, I log into the 750g and manually delete both routes and then re-add them. MAGICally, the 750G starts routing IPv6 traffic like it is supposed to. And it keeps doing so for some time. Until it breaks. (I can't predict when the box will again fail. And power cycling does nothing. Only manually removing/adding the default routes works.)

Any ideas?

Puzzled,
Aaron out.


P.S. Happy World IPv6 Day!
 
patrick7
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Posts: 298
Joined: Sat Jul 20, 2013 2:40 pm

Re: IPv6 default route problems on a 750G on World IPv6 Day

Sun Sep 15, 2013 12:57 am

Hi,

i know, this topic is 2 years old. But i also see this problem.
I have 2 RB750GL's, one in Zurich and another one in Frankfurt am Main. This one in Zurich is fine - IPv6 Routing works after each reboot. But Frankfurt does not work.

Config Zurich:
[admin@firewall.zrh.mydomain.li] /ipv6 route> print where dst-address=::/0
Flags: X - disabled, A - active, D - dynamic, 
C - connect, S - static, r - rip, o - ospf, b - bgp, U - unreachable 
 #      DST-ADDRESS              GATEWAY                  DISTANCE
 0 A S  ::/0                     2a02:d58:1:xx::1                1
[admin@firewall.zrh.mydomain.li] > /system routerboard print 
       routerboard: yes
             model: 750GL
     serial-number: -
  current-firmware: 3.09
  upgrade-firmware: 3.09
Config Frankfurt am Main:
[admin@firewall.fra.mydomain.li] /ipv6 route> print where dst-address=::/0
Flags: X - disabled, A - active, D - dynamic, 
C - connect, S - static, r - rip, o - ospf, b - bgp, U - unreachable 
 #      DST-ADDRESS              GATEWAY                  DISTANCE
 0 A S  ::/0                     2001:1608:21:xx::1              1
[admin@firewall.fra.mydomain.li] > /system routerboard print 
       routerboard: yes
             model: 750GL
     serial-number: -
  current-firmware: 3.09
  upgrade-firmware: 3.09
If i click on the route in Webfig and click on "apply", the route immediately active and it works. But always after a reboot, this route does not work. OS is on both sides MikroTik RouterOS 6.4.

Does anyone have an idea?

Best Regards,
Patrick

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