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Code Issues Releases Wiki Activity

Move limitation-related lines for VPC IPv6 feature to limitations section.

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Joe Greene 2016-12-08 21:15:43 -08:00
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@ -1366,8 +1366,6 @@ VPCs, Network Security, and Security Groups
- **IPv6** [is available in VPC.](https://aws.amazon.com/blogs/aws/new-ipv6-support-for-ec2-instances-in-virtual-private-clouds/) Along with this announcement came the introduction of the Egress-Only Internet Gateway. In cases where one would use NAT Gateways to enable egress-only traffic for their VPC in IPv4, one can use an Egress-Only Internet Gateway for the same purpose in IPv6.
- Amazon provides an IPv6 CIDR block for your VPC at your request - at present you cannot implement your own IPv6 block if you happen to own one already.
- New and existing VPCs can both use IPv6. Existing VPCs will need to be configured to have an IPv6 CIDR block associated with them, just as new VPCs do.
- ❗Security Groups and Route Tables apply entries separately for IPv4 and IPv6, so one must ensure they add entries for both protocols accordingly.
- ❗At launch, IPv6 for VPC is only available in the Ohio (us-east-2) region, though the launch announcement makes mention that other regions will see the same in the future.
### VPC and Network Security Gotchas and Limitations
@ -1377,6 +1375,8 @@ VPCs, Network Security, and Security Groups
- ❗New RDS instances require a [subnet group](http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_VPC.WorkingWithRDSInstanceinaVPC.html#USER_VPC.Subnets) within your VPC. If you’re using the [default VPC](http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/default-vpc.html) this isn’t a concern, it will contain a subnet for each availability zone in your region. However, if you’re creating your own VPC and plan on using RDS, make sure you have at least two subnets within the VPC to act as the subnet group.
- ❗If you delete the default VPC, the only way to create another VPC marked as “default” is to contact AWS technical support. See this [note](http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/default-vpc.html#deleting-default-vpc) in the documentation.
- ❗Be careful with VPC VPN credentials! If lost or compromised, the VPN endpoint must be deleted and recreated. See the instructions for [Replacing Compromised Credentials](http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_VPN.html#CompromisedCredentials).
- ❗Security Groups and Route Tables apply entries separately for IPv4 and IPv6, so one must ensure they add entries for both protocols accordingly.
- ❗At launch, IPv6 for VPC is only available in the Ohio (us-east-2) region, though the launch announcement makes mention that other regions will see the same in the future.
KMS
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