Optional Readonlyappliance(OPTIONAL) Enable to configure appliance mode for the attachment. This option is disabled by default.
Appliance mode ensures only a single network interface is chosen for the entirety of a traffic flow, enabling stateful deep packet inspection for the attached VPC.
https://docs.aws.amazon.com/vpc/latest/tgw/transit-gateway-appliance-scenario.html
Optional Readonlydns(OPTIONAL) Enable to configure DNS support for the attachment. This option is enabled by default.
Optional Readonlyipv6(OPTIONAL) Enable to configure IPv6 support for the attachment. This option is disabled by default.
NetworkConfig / VpcConfig | VpcTemplatesConfig / TransitGatewayAttachmentConfig / TransitGatewayAttachmentOptionsConfig
Transit Gateway attachment options configuration.
Description
Used to specify advanced options for the VPC attachment.
Example