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Moskvich
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IPv6 static default route issue in ROS v7.1.1

Fri Feb 04, 2022 4:40 pm

Hello fellow members

I was able to set a static default route in a hAP lite running v6.49.2 with no issues. The route became active and it was forwarding traffic successfully.

However when I try doing the same in v7.1.1 the route stays "filtered", traffic is not forwarded and the route disappears after a few minutes. I have global IPv6 addresses set on my WAN port and LAN bridge, with a /64 prefix (advertised) on the LAN side and /127 on the WAN side (not advertised) for a point-to-point connection with my ISP's gateway, as instructed by them. Same thing happens on both my hAP lite and RB5009 running v7. I didn't change any of the default settings when adding the route in ROS v6 or v7.

I have tried searching for an existing thread.

I must be doing something wrong. Thank you.
 
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Re: IPv6 static default route issue in ROS v7.1.1

Sun Feb 06, 2022 12:13 am

It's interesting, because AFAIK it should not work in v6:
You can assign /127 address and it works, however there is a problem if this address is used as gateway. Gateways from /127 addresses cannot be resolved.
But it should work in v7:
... /127 is suppoerted and works in ROSv7
And my quick test confirms both.
 
anishpsla
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Re: IPv6 static default route issue in ROS v7.1.1

Mon Feb 07, 2022 6:27 pm

I also have the exact problem. Default route shows as filtered and disappeared in seconds. ROS 7.1
 
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mrz
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Re: IPv6 static default route issue in ROS v7.1.1

Mon Feb 07, 2022 6:33 pm

"filtered" means that route was rejected by your routing filters.
 
anishpsla
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Re: IPv6 static default route issue in ROS v7.1.1

Mon Feb 07, 2022 7:16 pm

There is no filters in my router.
 
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mrz
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Re: IPv6 static default route issue in ROS v7.1.1

Mon Feb 07, 2022 10:51 pm

If you have specified filter chain in the and did not add any rules then by default chain rejects everything.
 
pe1chl
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Re: IPv6 static default route issue in ROS v7.1.1

Mon Feb 07, 2022 11:16 pm

If you have specified filter chain in the and did not add any rules then by default chain rejects everything.
----------------------------------------------^^^ in the WHAT?

Routing filters are applied to automatic routing protocols, not to static routes, right?
 
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mrz
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Re: IPv6 static default route issue in ROS v7.1.1

Tue Feb 08, 2022 10:00 am

Static route cannot be filtered. Please send output of "/routing/route/print detail" where it shows that static route is filtered.
 
Moskvich
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Re: IPv6 static default route issue in ROS v7.1.1

Tue Feb 08, 2022 12:15 pm

Static route cannot be filtered. Please send output of "/routing/route/print detail" where it shows that static route is filtered.
Thank you for your reply.

The added static route does not show up in the output of "/routing/route/print detail", nor in "/ipv6/route/print detail".

In the output of "export" the action of adding it shows up as "add disabled=no dst-address=/0 gateway=(my IPv6 gateway's address)".

Addition:
When I click the "plus" icon in WinBox /IPv6/Routes I see "filtered" at the bottom of the new window from the very start, before putting anything in or applying.

In a desperate attempt, I tried adding general "accept" rules for "input" and "forward" in /IPv6/Firewall, however static route is still filtered.
 
anishpsla
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Re: IPv6 static default route issue in ROS v7.1.1

Wed Feb 09, 2022 4:29 pm

I was also facing exact same problem. I forced to downgrade. It works well on latest ROS version 6.
 
Moskvich
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Re: IPv6 static default route issue in ROS v7.1.1

Wed Feb 16, 2022 10:53 am

I have upgraded to ROS v7.1.2 - issue persists.
 
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mkx
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Re: IPv6 static default route issue in ROS v7.1.1

Wed Feb 16, 2022 4:16 pm

So far you didn't post any concrete diagnostic information for the rest to work on. So post output of /ipv6/address/export, /ipv6/route/export and /ipv6/route/print as starting point.
 
Moskvich
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Re: IPv6 static default route issue in ROS v7.1.1  [SOLVED]

Wed Feb 16, 2022 5:14 pm

FOUND IT!

When you add and apply a static route using the GUI, the destination address is preset to "::/0". HOWEVER, afterwards, in the output of "/ipv6/route/export" in terminal it shows "dst-address=/0"! Adding a static route in terminal with a destination address "::/0" works and the route becomes active.

This is a software bug.
RB5009UG+S+ (arm64)
RouterOS v7.1.2

Thank you all for your replies.

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