svn commit: r361143 - head/release/tools

Ed Maste emaste at freebsd.org
Mon May 18 00:38:09 UTC 2020


On Sun, 17 May 2020 at 20:24, Conrad Meyer <cem at freebsd.org> wrote:
>
> On Sun, May 17, 2020 at 4:49 PM Oliver Pinter <oliver.pntr at gmail.com> wrote:
> > On Sunday, May 17, 2020, Colin Percival <cperciva at freebsd.org> wrote:
> >> +# Provide instructions on how to mount the requested filesystem.
> >> +FS=$1
> >> +REGION=`fetch -qo- http://169.254.169.254/latest/meta-data/placement/availability-zone | sed -e 's/[a-z]$//'`
> >
> >
> > What will be this hard-coded ip address without any verification or at least https?
>
> It's a special non-routable IP that is used in at least AWS and Azure
> to provide some VM services.  Traffic to and from it never leaves the
> virtual overlay network, which by design VM instances already trust to
> provide privacy.  It doesn't require functioning DNS to access the raw
> IP.

And, more information at
https://en.wikipedia.org/wiki/Link-local_address


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