**To disassociate an IPv6 CIDR block from a subnet** This example disassociates an IPv6 CIDR block from a subnet using the association ID for the CIDR block. Command:: aws ec2 disassociate-subnet-cidr-block --association-id subnet-cidr-assoc-3aa54053 Output:: { "SubnetId": "subnet-5f46ec3b", "Ipv6CidrBlockAssociation": { "Ipv6CidrBlock": "2001:db8:1234:1a00::/64", "AssociationId": "subnet-cidr-assoc-3aa54053", "Ipv6CidrBlockState": { "State": "disassociating" } } }