On Wed, 6 Oct 2021, Michael Thomas wrote:
On 10/6/21 2:33 PM, William Herrin wrote:
On Wed, Oct 6, 2021 at 10:43 AM Michael Thomas <m...@mtcc.com> wrote:
So if I understand their post correctly, their DNS servers have the
ability to withdraw routes if they determine are sub-optimal (fsvo).
The servers' IP addresses are anycasted. When one data center
determines itself to be malfunctioning, it withdraws the routes so
that users will reach a different data center that is, in theory,
still functioning.
Ah, I was wondering if the anycast part was the relevant bit. But doesn't it
seem odd that it would be intertwined with the DNS infrastructure?
People have been anycasting DNS server IPs for years (decades?). So, no.
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