diff --git a/IMPLEMENTATION_COVERAGE.md b/IMPLEMENTATION_COVERAGE.md
index 91a37c00d..793376836 100644
--- a/IMPLEMENTATION_COVERAGE.md
+++ b/IMPLEMENTATION_COVERAGE.md
@@ -2218,7 +2218,7 @@
- [ ] describe_volumes_modifications
- [X] describe_vpc_attribute
- [X] describe_vpc_classic_link
-- [ ] describe_vpc_classic_link_dns_support
+- [X] describe_vpc_classic_link_dns_support
- [ ] describe_vpc_endpoint_connection_notifications
- [ ] describe_vpc_endpoint_connections
- [ ] describe_vpc_endpoint_service_configurations
@@ -2238,7 +2238,7 @@
- [ ] disable_transit_gateway_route_table_propagation
- [ ] disable_vgw_route_propagation
- [X] disable_vpc_classic_link
-- [ ] disable_vpc_classic_link_dns_support
+- [X] disable_vpc_classic_link_dns_support
- [X] disassociate_address
- [ ] disassociate_client_vpn_target_network
- [ ] disassociate_iam_instance_profile
@@ -2251,7 +2251,7 @@
- [ ] enable_vgw_route_propagation
- [ ] enable_volume_io
- [X] enable_vpc_classic_link
-- [ ] enable_vpc_classic_link_dns_support
+- [X] enable_vpc_classic_link_dns_support
- [ ] export_client_vpn_client_certificate_revocation_list
- [ ] export_client_vpn_client_configuration
- [ ] export_image
diff --git a/moto/ec2/models.py b/moto/ec2/models.py
index ffe801f4c..2adfb138a 100644
--- a/moto/ec2/models.py
+++ b/moto/ec2/models.py
@@ -2435,6 +2435,7 @@ class VPC(TaggedEC2Resource):
self.instance_tenancy = instance_tenancy
self.is_default = 'true' if is_default else 'false'
self.enable_dns_support = 'true'
+ self.classic_link_enabled = 'false'
# This attribute is set to 'true' only for default VPCs
# or VPCs created using the wizard of the VPC console
self.enable_dns_hostnames = "true" if is_default else "false"
@@ -2546,6 +2547,14 @@ class VPC(TaggedEC2Resource):
self.classic_link_enabled = "false"
return self.classic_link_enabled
+ def enable_vpc_classic_link_dns_support(self):
+ self.classic_link_dns_supported = 'true'
+ return self.classic_link_dns_supported
+
+ def disable_vpc_classic_link_dns_support(self):
+ self.classic_link_dns_supported = 'false'
+ return self.classic_link_dns_supported
+
def disassociate_vpc_cidr_block(self, association_id):
if self.cidr_block == self.cidr_block_association_set.get(
association_id, {}
@@ -2684,6 +2693,14 @@ class VPCBackend(object):
vpc = self.get_vpc(vpc_id)
return vpc.disable_vpc_classic_link()
+ def enable_vpc_classic_link_dns_support(self, vpc_id):
+ vpc = self.get_vpc(vpc_id)
+ return vpc.enable_vpc_classic_link_dns_support()
+
+ def disable_vpc_classic_link_dns_support(self, vpc_id):
+ vpc = self.get_vpc(vpc_id)
+ return vpc.disable_vpc_classic_link_dns_support()
+
def modify_vpc_attribute(self, vpc_id, attr_name, attr_value):
vpc = self.get_vpc(vpc_id)
if attr_name in ("enable_dns_support", "enable_dns_hostnames"):
diff --git a/moto/ec2/responses/vpcs.py b/moto/ec2/responses/vpcs.py
index 3cac2a6a1..3c241c4e2 100644
--- a/moto/ec2/responses/vpcs.py
+++ b/moto/ec2/responses/vpcs.py
@@ -50,6 +50,28 @@ class VPCs(BaseResponse):
template = self.response_template(DESCRIBE_VPC_ATTRIBUTE_RESPONSE)
return template.render(vpc_id=vpc_id, attribute=attribute, value=value)
+ def describe_vpc_classic_link_dns_support(self):
+ vpc_ids = self._get_multi_param('VpcIds')
+ filters = filters_from_querystring(self.querystring)
+ vpcs = self.ec2_backend.get_all_vpcs(vpc_ids=vpc_ids, filters=filters)
+ doc_date = '2013-10-15' if 'Boto/' in self.headers.get('user-agent', '') else '2016-11-15'
+ template = self.response_template(DESCRIBE_VPC_CLASSIC_LINK_DNS_SUPPORT_RESPONSE)
+ return template.render(vpcs=vpcs, doc_date=doc_date)
+
+ def enable_vpc_classic_link_dns_support(self):
+ vpc_id = self._get_param('VpcId')
+ classic_link_dns_supported = self.ec2_backend.enable_vpc_classic_link_dns_support(vpc_id=vpc_id)
+ doc_date = '2013-10-15' if 'Boto/' in self.headers.get('user-agent', '') else '2016-11-15'
+ template = self.response_template(ENABLE_VPC_CLASSIC_LINK_DNS_SUPPORT_RESPONSE)
+ return template.render(classic_link_dns_supported=classic_link_dns_supported, doc_date=doc_date)
+
+ def disable_vpc_classic_link_dns_support(self):
+ vpc_id = self._get_param('VpcId')
+ classic_link_dns_supported = self.ec2_backend.disable_vpc_classic_link_dns_support(vpc_id=vpc_id)
+ doc_date = '2013-10-15' if 'Boto/' in self.headers.get('user-agent', '') else '2016-11-15'
+ template = self.response_template(DISABLE_VPC_CLASSIC_LINK_DNS_SUPPORT_RESPONSE)
+ return template.render(classic_link_dns_supported=classic_link_dns_supported, doc_date=doc_date)
+
def describe_vpc_classic_link(self):
vpc_ids = self._get_multi_param('VpcId')
filters = filters_from_querystring(self.querystring)
@@ -171,6 +193,31 @@ CREATE_VPC_RESPONSE = """
"""
+DESCRIBE_VPC_CLASSIC_LINK_DNS_SUPPORT_RESPONSE = """
+
+ 7a62c442-3484-4f42-9342-6942EXAMPLE
+
+ {% for vpc in vpcs %}
+ -
+ {{ vpc.id }}
+ {{ vpc.classic_link_dns_supported }}
+
+ {% endfor %}
+
+"""
+
+ENABLE_VPC_CLASSIC_LINK_DNS_SUPPORT_RESPONSE = """
+
+ 7a62c442-3484-4f42-9342-6942EXAMPLE
+ {{ classic_link_dns_supported }}
+"""
+
+DISABLE_VPC_CLASSIC_LINK_DNS_SUPPORT_RESPONSE = """
+
+ 7a62c442-3484-4f42-9342-6942EXAMPLE
+ {{ classic_link_dns_supported }}
+"""
+
DESCRIBE_VPC_CLASSIC_LINK_RESPONSE = """
7a62c442-3484-4f42-9342-6942EXAMPLE
diff --git a/tests/test_ec2/test_vpcs.py b/tests/test_ec2/test_vpcs.py
index c7a3a940a..2e48fe019 100644
--- a/tests/test_ec2/test_vpcs.py
+++ b/tests/test_ec2/test_vpcs.py
@@ -746,3 +746,63 @@ def test_describe_classic_link_multiple():
response = ec2.meta.client.describe_vpc_classic_link(VpcIds=[vpc1.id, vpc2.id])
assert response.get('Vpcs')[0].get('ClassicLinkEnabled').should.be.false
assert response.get('Vpcs')[1].get('ClassicLinkEnabled').should.be.true
+
+
+@mock_ec2
+def test_enable_vpc_classic_link_dns_support():
+ ec2 = boto3.resource('ec2', region_name='us-west-1')
+
+ # Create VPC
+ vpc = ec2.create_vpc(CidrBlock='10.1.0.0/16')
+
+ response = ec2.meta.client.enable_vpc_classic_link_dns_support(VpcId=vpc.id)
+ assert response.get('Return').should.be.true
+
+
+@mock_ec2
+def test_disable_vpc_classic_link_dns_support():
+ ec2 = boto3.resource('ec2', region_name='us-west-1')
+
+ # Create VPC
+ vpc = ec2.create_vpc(CidrBlock='10.0.0.0/16')
+
+ ec2.meta.client.enable_vpc_classic_link_dns_support(VpcId=vpc.id)
+ response = ec2.meta.client.disable_vpc_classic_link_dns_support(VpcId=vpc.id)
+ assert response.get('Return').should.be.false
+
+
+@mock_ec2
+def test_describe_classic_link_dns_support_enabled():
+ ec2 = boto3.resource('ec2', region_name='us-west-1')
+
+ # Create VPC
+ vpc = ec2.create_vpc(CidrBlock='10.0.0.0/16')
+
+ ec2.meta.client.enable_vpc_classic_link_dns_support(VpcId=vpc.id)
+ response = ec2.meta.client.describe_vpc_classic_link_dns_support(VpcIds=[vpc.id])
+ assert response.get('Vpcs')[0].get('ClassicLinkDnsSupported').should.be.true
+
+
+@mock_ec2
+def test_describe_classic_link_dns_support_disabled():
+ ec2 = boto3.resource('ec2', region_name='us-west-1')
+
+ # Create VPC
+ vpc = ec2.create_vpc(CidrBlock='10.90.0.0/16')
+
+ response = ec2.meta.client.describe_vpc_classic_link_dns_support(VpcIds=[vpc.id])
+ assert response.get('Vpcs')[0].get('ClassicLinkDnsSupported').should.be.false
+
+
+@mock_ec2
+def test_describe_classic_link_dns_support_multiple():
+ ec2 = boto3.resource('ec2', region_name='us-west-1')
+
+ # Create VPC
+ vpc1 = ec2.create_vpc(CidrBlock='10.90.0.0/16')
+ vpc2 = ec2.create_vpc(CidrBlock='10.0.0.0/16')
+
+ ec2.meta.client.enable_vpc_classic_link_dns_support(VpcId=vpc2.id)
+ response = ec2.meta.client.describe_vpc_classic_link_dns_support(VpcIds=[vpc1.id, vpc2.id])
+ assert response.get('Vpcs')[0].get('ClassicLinkDnsSupported').should.be.false
+ assert response.get('Vpcs')[1].get('ClassicLinkDnsSupported').should.be.true