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Date:      Sun, 14 Feb 2021 23:49:48 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 243703] fe80 route need to add manually and NDP doesn't populate itself
Message-ID:  <bug-243703-7501-Q9w2rxYWgn@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-243703-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-243703-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D243703

--- Comment #2 from Alexander V. Chernikov <melifaro@FreeBSD.org> ---
I guess it'd be quite a delayed reply.

What does `ifconfig tap0 inet6` show?

I suspect it contains IFDISABLED for IPv6.

With `ipv6_activate_all_interfaces=3D"YES"` in /etc/rc.conf and
net.inet6.ip6.auto_linklocal=3D1 (default)

it seems to work on -HEAD:
23:49 [2] m@devel2 s ifconfig tap5 create
23:49 [2] m@devel2 s ifconfig tap5 inet6
tap5: flags=3D8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=3D80000<LINKSTATE>
        nd6 options=3D21<PERFORMNUD,AUTO_LINKLOCAL>
23:49 [2] m@devel2 s ifconfig tap5 up
23:49 [2] m@devel2 s ifconfig tap5 inet6
tap5: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=3D80000<LINKSTATE>
        inet6 fe80::5a9c:fcff:fe00:7021%tap5 prefixlen 64 scopeid 0x8
        nd6 options=3D21<PERFORMNUD,AUTO_LINKLOCAL>

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