DevOps Community Sponsored by Cloud Posse

SweetOps

Can someone confirm that this will be possible?

```    VPC A     &lt;---peering---&gt;     VPC B
(10.10.0.0/16)                (172.31.254.0/24)```
Third party private CIDR: 10.115.0.0/24

VPC B routing and IPSec connection to third party private CIDR network
VPC A route traffic to this third party private CIDR thru VPC B

This seems possible. No overlap of CIDRs. Did you try?

We did 1:1 NAT on VPC B side, because you cannot route traffic to different network CIDRs than the peered one

when we add 10.115.0.0/24 to VPC A route table to go thru peering nothing happened :confused:

I think thru peering you can push only traffic to peered VPC B CIDR

Oh that makes sense. Peering would forward traffic that it knows the other side is publishing.
What I don't fully understand is how the other side has a subnet with a CIDR that is not included in the VPC's CIDR

There is custom side to side VPN solution.