Esta entrada existe porque você ativou o ClassicLink para este VPC. A entrada está correta e não pode ser removida, exceto desativando o ClassicLink. Esta é a supernet para os endereços IP privados no EC2-Classic.
When you enable a VPC for ClassicLink, a static route is added to all of the VPC route tables with a destination of
10.0.0.0/8
and a target oflocal
. This allows communication between instances in the VPC and any EC2-Classic instances that are then linked to the VPC. If you add a custom route table to a ClassicLink-enabled VPC, a static route is automatically added with a destination of10.0.0.0/8
and a target of local. When you disable ClassicLink for a VPC, this route is automatically deleted in all of the VPC route tables.http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/vpc-classiclink.html#classiclink-basics