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Lack of a log record is not definitive proof of absence of every packet event. The reported evidence instead concerns ALB access logs capture HTTP request and response fields not available in VPC Flow Logs: application load-balancer logging carries different context from subnet-level network-flow telemetry.

Rule-level WAF records distinguish an edge policy block from a backend application response. The reported evidence instead concerns ALB access logs capture HTTP request and response fields not available in VPC Flow Logs: application load-balancer logging carries different context from subnet-level network-flow telemetry.

Edge delivery requests can bypass origin logs on cache hits, so origin-only auditing is incomplete. For the stated conditions, application load-balancer logging carries different context from subnet-level network-flow telemetry. The more specific mechanism is ALB access logs capture HTTP request and response fields not available in VPC Flow Logs.

Target discovery must follow workload life cycle to avoid forwarding to stopped or obsolete tasks. For the stated conditions, high-performance fabric semantics differ from ordinary TCP service traffic or generic additional ENIs. The more specific mechanism is elastic Fabric Adapter supports optimized low-latency HPC communication for supported workloads and instance types.

A large AWS frame cannot traverse a lower-MTU intermediate segment without compatible handling. The decisive technical distinction is elastic Fabric Adapter supports optimized low-latency HPC communication for supported workloads and instance types; high-performance fabric semantics differ from ordinary TCP service traffic or generic additional ENIs.

A nominal bandwidth rating alone does not establish packet-processing performance for tiny packets. The decisive technical distinction is elastic Fabric Adapter supports optimized low-latency HPC communication for supported workloads and instance types; high-performance fabric semantics differ from ordinary TCP service traffic or generic additional ENIs.

Removing ingress permissions alone does not stop instances initiating outbound connections. For the stated conditions, endpoint private addressing does not automatically enforce least-privilege client access. The more specific mechanism is interface endpoint ENI security groups can restrict client traffic to specific approved sources.

Outbound permission does not initiate an inbound web listener connection through stateful SG evaluation. The decisive technical distinction is interface endpoint ENI security groups can restrict client traffic to specific approved sources; endpoint private addressing does not automatically enforce least-privilege client access.

Using a workload group as source narrows administrative access compared with internet-wide permission. The reported evidence instead concerns interface endpoint ENI security groups can restrict client traffic to specific approved sources: endpoint private addressing does not automatically enforce least-privilege client access.

A route-table entry is not proof the next-hop attachment remains operational. The decisive technical distinction is Transit Gateway route quotas may be exhausted by unnecessarily granular route propagation; route density consumes finite hub capacity independently from overall bandwidth throughput.

An association change can alter BGP-originated reachability without deleting the physical VIF. For the stated conditions, route density consumes finite hub capacity independently from overall bandwidth throughput. The more specific mechanism is Transit Gateway route quotas may be exhausted by unnecessarily granular route propagation.

A new attachment ID is not automatically equivalent to an old one for route visibility. The decisive technical distinction is Transit Gateway route quotas may be exhausted by unnecessarily granular route propagation; route density consumes finite hub capacity independently from overall bandwidth throughput.

A valid network route cannot compensate for missing administrative permission to manage the shared resource. That property alone cannot account for the reported symptom; a route-table entry is not proof the next-hop attachment remains operational.

A route marked blackhole cannot carry IPv4 outbound traffic regardless of instance state. The reported evidence instead concerns tGW static routes can become unusable when their referenced attachment no longer exists: a route-table entry is not proof the next-hop attachment remains operational.

Peer connection state does not automatically propagate remote VPC CIDR changes. The decisive technical distinction is tGW static routes can become unusable when their referenced attachment no longer exists; a route-table entry is not proof the next-hop attachment remains operational.

TCP pass-through leaves the application backend responsible for certificate and TLS session handling. The decisive technical distinction is ALB listener rules support fixed-response actions for configured request matches; a fixed response is produced by the load balancer and does not depend on backend target availability.

GWLB is designed for appliance insertion rather than content-based ALB routing or general TCP endpoints alone. The reported evidence instead concerns ALB listener rules support fixed-response actions for configured request matches: a fixed response is produced by the load balancer and does not depend on backend target availability.

A conventional bare TCP listener is not interchangeable with the GENEVE appliance data path. The decisive technical distinction is ALB listener rules support fixed-response actions for configured request matches; a fixed response is produced by the load balancer and does not depend on backend target availability.

A conventional bare TCP listener is not interchangeable with the GENEVE appliance data path. That adjustment does not address the controlling condition: weighted target-group routing is distinct from Route 53's DNS-record weighting and operates per ALB request decisions. Verify measured requests divide between target groups according to the intended weights.

TCP pass-through leaves the application backend responsible for certificate and TLS session handling. The needed control instead targets ALB forward actions can use weighted target groups for controlled request distribution; it succeeds when measured requests divide between target groups according to the intended weights.

Instance running state is distinct from the health check HTTP response required by the target group. The needed control instead targets ALB forward actions can use weighted target groups for controlled request distribution; it succeeds when measured requests divide between target groups according to the intended weights.

Configuration audit events and network data-plane activity are separate evidence streams. The reported evidence instead concerns traffic Mirroring filters select packet types or source-destination patterns sent to the mirror target: mirroring all packets increases inspection overhead without improving signal for one incident.

Traffic tuples may differ before and after NAT while representing one application connection. That property alone cannot account for the reported symptom; mirroring all packets increases inspection overhead without improving signal for one incident.

Aggregation windows combine multiple packets from a flow into one record. For the stated conditions, mirroring all packets increases inspection overhead without improving signal for one incident. The more specific mechanism is traffic Mirroring filters select packet types or source-destination patterns sent to the mirror target.

EC2 scaling cannot allocate ENIs when the chosen subnets have no free addresses. That property alone cannot account for the reported symptom; enhanced networking reduces virtualization overhead when the instance and driver support the feature.

A large AWS frame cannot traverse a lower-MTU intermediate segment without compatible handling. The decisive technical distinction is enhanced networking with ENA can improve packet performance on supported instance types; enhanced networking reduces virtualization overhead when the instance and driver support the feature.

Availability-zone placement can change recurring traffic charges even within a Region. For the stated conditions, enhanced networking reduces virtualization overhead when the instance and driver support the feature. The more specific mechanism is enhanced networking with ENA can improve packet performance on supported instance types.

Simply creating an endpoint does not redirect network packets onto the appliance data path. It does not directly achieve the required result: bidirectional allowed flows traverse the same inspection state without unexpected resets. The constraint is that asymmetric routing sends the reverse packets through missing firewall state or around inspection controls.

Layer-seven WAF scope cannot act as a stateful inter-VPC TCP firewall for non-HTTP traffic. That adjustment does not address the controlling condition: asymmetric routing sends the reverse packets through missing firewall state or around inspection controls. Verify bidirectional allowed flows traverse the same inspection state without unexpected resets.

Packets not sent to the stateful engine cannot be filtered by its configured stateful rules. In this situation, asymmetric routing sends the reverse packets through missing firewall state or around inspection controls. The proposed change does not ensure bidirectional allowed flows traverse the same inspection state without unexpected resets.

Coarse summarization can hide reachability differences and route withdrawals from downstream peers. The needed control instead targets VPN tunnel availability does not prove subnet routing and stateful firewall authorization for application flows; it succeeds when the application flow succeeds while unrelated traffic remains blocked.

Failback requires explicit routing preference rather than assuming an active link automatically dominates. That adjustment does not address the controlling condition: an established IKE security association can coexist with filtered or misrouted application packets. Verify the application flow succeeds while unrelated traffic remains blocked.

The new prefix needs explicit route visibility even when the existing original VPC addresses work. It does not directly achieve the required result: the application flow succeeds while unrelated traffic remains blocked. The constraint is that an established IKE security association can coexist with filtered or misrouted application packets.