On 10/15/19 10:54 AM, Ken Hohhof wrote:
I have cases where traffic to some customers comes in via upstream provider A but the return traffic exits my network via upstream provider B.

What kind of problems if any can this cause?



Normal multihoming where you announce your prefixes to everyone? None, really. You could turn down one temporarily to see if that make a difference. Sometimes you get things where providers assume you are single homed and incorrect apply uRPF.

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