[Bug 265857] qlnxe: no IPV6 pings between nodes on the same switch until an IPv4 address is set

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265857

--- Comment #21 from benoitc <benoitc@enki-multimedia.eu> ---
(In reply to Zhenlei Huang from comment #20)

> Why I got confused is that the attachment shows that ping from node2 to node1 with link-local address fails .
I tested after reboot without mtu set and it worked. Which is weird indeed.

> This looks like port isolation is tuned on, and A, B, C are in private VLAN.
> 
> Do you have physical access to the environment? Can you please exchange the switch > port of A with that of D ? Then the setup looks like this:
> 
>          |- ::10 machine D
>          |- ::12 machine B
> SWITCH --|- ::13 machine C
>          |
>          |- ::11 machine A
> 
> Then ping global IPv6 address from B to D, and B to A .

I did it just to be sure, but this didn't change anything. I also checked on
the switch and no port isolation is set.


> > Using Linux this is working perfectly and th eissue is not reproduced.
>
> Do you mean that with same switch and machines, but A, B and C boot into Linux ?

yes exactly. Under linux it works like a charm...

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