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Rick_Star
VMware Employee
VMware Employee

Hello Nothing_NO and thank you for your question.

As stated in the KB: "VMC also uses this IP range between internal routing components it will create a conflict."

You "may get lucky" with not matching/overlapping IPs, however, as also stated: "If a packet with either a source or a destination address in the 100.64 address space that conflicts with overlapping address space internal to the SDDC, it will be delivered inside the edge and will never egress."

You can also see some more Info here: https://docs.vmware.com/en/VMware-Cloud-on-AWS/services/com.vmware.vmc-aws.networking-security/GUID-...


With that being said, it is highly recommended to NOT use this CIDR. 
If - for whatever reason - your Networking design does not allow to not use this Network, I'd highly recommend to get in touch with your specialists to discuss this in detail. 

Hope this helps. 

Be well & stay safe,

Rick

Rick Hoffmann
Cloud Customer Success Architect - VMware Cloud
VMware Inc.
http://cloudsuccess.blog
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