nanog mailing list archives

Re: Credit to Digital Ocean for ipv6 offering


From: Valdis.Kletnieks () vt edu
Date: Tue, 17 Jun 2014 17:53:04 -0400

On Tue, 17 Jun 2014 16:26:47 -0500, Chris Adams said:

Doing anything that ties networks to physical servers is a poor design
for a VPS environment.  That would mean that any VM migration requires
customers to renumber (so no live migration allowed at all).

Why?  Two hypervisors tossing a subnet route to a VM back and forth is
*exactly* the same problem as two routers using VRRP to toss a subnet
route back and forth.  And somehow, we all manage to do that *all the time*
without machines on the subnet having to renumber.

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