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Date:      Fri, 27 May 2016 23:57:02 +0200
From:      Mark Tinka <mark.tinka@seacom.mu>
To:        Kevin Oberman <rkoberman@gmail.com>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, tinc@tinc-vpn.org, Mailinglists FreeBSD <freebsd-questions@freebsd.org>
Subject:   Re: IPv6, ULAs and FreeBSD
Message-ID:  <bba7ed3e-bcb9-8dff-d8bb-31ca6f66c873@seacom.mu>
In-Reply-To: <CAN6yY1sNqSfjvV5j4vfmm=h=RCP2uiFRXaBzvdJGGV-gX_vjTA@mail.gmail.com>
References:  <20160519124446.GB2444@box-fra-01.niklaas.eu> <20160523034855.GA37797@box-fra-01.niklaas.eu> <20160524061707.GA77980@box-fra-01.niklaas.eu> <20160526193602.GF49239@box-fra-01.niklaas.eu> <CAN6yY1uEwttkd7iCBrjoFytUjUiNL1Ew-j7pm=-S=dY9HBXPYQ@mail.gmail.com> <20160527070901.GA7911@box-fra-01.niklaas.eu> <CAN6yY1sNqSfjvV5j4vfmm=h=RCP2uiFRXaBzvdJGGV-gX_vjTA@mail.gmail.com>

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On 27/May/16 21:02, Kevin Oberman wrote:

> This is fine, but why not use link-local for the VPN links? That's the
> primary reason for them.

That's really not good advice.

I'd caution against using link-local addresses for any type of service.

Link-local addresses are used for host-to-host communications on the
same Layer 2 segment. Routers will not forward traffic with link-local
addresses.

Besides, link-local addresses are automatically created. They cannot be
guaranteed to be unique anymore than they can be guaranteed to be constant.

Mark.



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