Re: AWS issues with 172.0.0.0/12

[Jim Popovitch via NANOG <nanog () nanog org>]

On 10/1/2019 4:09 AM, Christopher Morrow wrote:
> possible that this is various AWS customers making iptables/firewall mistakes?
>    "block that pesky rfc1918 172/12 space!!"

AWS also uses some 172/12 space on their internal network (e.g. the 
network that sits between EC2 instances and the AWS external firewalls)

-Jim P.