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Date:      Mon, 28 Dec 2009 12:58:01 -0600
From:      "David DeSimone" <fox@verio.net>
To:        <freebsd-net@freebsd.org>
Subject:   Re: GIF MTU parmeter is needed
Message-ID:  <20091228185801.GA5508@verio.net>
In-Reply-To: <90dbee150912270236k3be6e530r80d9e7576274137c@mail.gmail.com>
References:  <90dbee150912261333l602c4161nccaf1995dc83699a@mail.gmail.com> <4B3691FF.3050402@elischer.org> <90dbee150912270236k3be6e530r80d9e7576274137c@mail.gmail.com>

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Hideki Yamamoto <hyama99@gmail.com> wrote:
>
>     h99# ifconfig xl0 inet6 2001:99::1
>     h99# ifconfig gif0 create
>     h99# ifconfig gif0 inet tunnel 192.168.1.8 192.168.1.4
>     h99# route add -inet6 2001:98::/64 -interface gif0
>     add net 2001:98::/64: gateway gif0
>     h99# ifconfig  gif0 up

I wonder if the problem you're seeing is due to the MTU attached to the
static route that you're adding rather than the MTU of the interface.

Try different command sequences and perform a "route get" to find out
what MTU is being applied to the routes, to see if they change to what
you expect.

-- 
David DeSimone == Network Admin == fox@verio.net
  "I don't like spinach, and I'm glad I don't, because if I
   liked it I'd eat it, and I just hate it." -- Clarence Darrow


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