July 15, 2021 . 1 MIN READ
https://acloud.guru/forums/aws-certified-solutions-architect-associate/discussion/-LInkywzEVJQIRAiPQlu/error%20%22CIDR%20Address%20overlaps%20with%20existing%20Subnet%20CIDR:%20192.168.0.0~2F16%22
It’s because the address range overlaps.
192.168.0.0/16 covers 192.168.0.0 – 192.168.255.255
192.168.1.0/24 covers 192.168.1.0 to 192.168.1.255.
Maybe you meant 192.168.0.0/24 for subnet 1.
CIDR addresses are confusing, google around for an explanation. Here’s a tool that might help. https://www.ipaddressguide.com/cidr
