[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 #24 from Zhenlei Huang <zlei.huang@gmail.com> ---
I suspect some multicast packets are discarded.

Can you do a tcpdump capture on D while ping6 A -> B, and ping6 A -> D ?
Make sure clear neighbor cache on both side before every ping.

tcpdump listerning on D:
```
# tcpdump -nvei mce0
```


For A -> B:
```
# ndp -c # on B
```

```
# ndp -c # on A
# ping6 -c1 <PREFIX>::12
# ndp -na
```

For A -> D:
```
# ndp -c # on D
```

```
# ndp -c # on A
# ping6 -c1 <PREFIX>::10
# ndp -na
```

You can omit the <PREFIX> . Or send the pcap privately to my FreeBSD email
zlei@FreeBSD.org

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