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<div class="moz-cite-prefix">On 7/27/21 10:54, Vimal wrote:<br>
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<div dir="ltr">(Unsure if this is the right forum to ask this
question, but here goes:)
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<div>From what I understand, IP Anycast can be used to steer
traffic into a server that's close to the client.</div>
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<div>I am curious if anyone here has/encountered a setup where
they use anycast IP on their gateways... to have a predictable
egress IP for their traffic, regardless of where they are
located?</div>
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<p>Stateless outbound load-balancing setups exist.</p>
<p>Example you have two or more nat44 / nat64 / cgnat boxes behind
a common ecmp path with the same destination IP(s). this is
normally so that you have more boxes that accumulate state rather
than being bound to a single one.<br>
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<div>For example, a search engine crawler could in principle
have the same IP advertised all over the world, but it looks
like they don't... I wonder why?<br clear="all">
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<p>So this is a somewhat different problem...</p>
<p>There's no assurance that when you initiate a connection that
the return path will return to the same instance of your anycast
announcement when the server on the other side replies.</p>
<p>Effectively the initiating party needs a unicast address or you
need some out of band path to get an errant packet back to the
correct host.<br>
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<div>-- <br>
<div dir="ltr" class="gmail_signature"
data-smartmail="gmail_signature">Vimal</div>
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data-smartmail="gmail_signature"><br>
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