POST /

Content-Type: application/x-www-form-urlencoded

Action=AllocateIpamPoolCidr&AllowedCidr.1=__Member__&AllowedCidr.2=__Member__&Cidr=__Cidr__&ClientToken=__ClientToken__&Description=__Description__&DisallowedCidr.1=__Member__&DisallowedCidr.2=__Member__&DryRun=true&IpamPoolId=__IpamPoolId__&NetmaskLength=1&PreviewNextCidr=true&TagSpecification.1.ResourceType=capacity-reservation&TagSpecification.1.Tag.1.Key=__Key__&TagSpecification.1.Tag.1.Value=__Value__&TagSpecification.1.Tag.2.Key=__Key__&TagSpecification.1.Tag.2.Value=__Value__&TagSpecification.2.ResourceType=capacity-reservation&TagSpecification.2.Tag.1.Key=__Key__&TagSpecification.2.Tag.1.Value=__Value__&TagSpecification.2.Tag.2.Key=__Key__&TagSpecification.2.Tag.2.Value=__Value__&Version=2016-11-15