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Date:      Fri, 15 Apr 2022 09:59:35 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 263288] IPv6 system not responding to Neighbor Solicitation
Message-ID:  <bug-263288-227-gyuyOWfzfz@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-263288-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-263288-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D263288

Zhenlei Huang <zlei.huang@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |zlei.huang@gmail.com

--- Comment #1 from Zhenlei Huang <zlei.huang@gmail.com> ---
The `ipv6_privacy` is meant to use and prefer privacy addresses as per RFC
4941. It should not has any relationships to this issue.

The `ndp -na` result shows that the neighbor cache entry for your router / =
gw
is stale.

fe80::1%em0                          00:05:73:a0:0f:ff    em0 23h56m36s S R
<---
...
fe80::8678:acff:fe1c:ec41%em0        84:78:ac:1c:ec:41    em0 23h49m7s  S R
<---

Can you please try to ping your gw and share the ndp result?

```
# ping6 fe80::1%em0
and
# ping6 fe80::8678:acff:fe1c:ec41%em0
```

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