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QUIC may use UDP 443, but the explicitly requested TCP HTTPS flow requires TCP matching.

Typical HTTPS clients initiate from ephemeral source ports, so source eq 443 would reject their ordinary connections.

Clients generally originate sessions from ephemeral ports, so source eq 443 would miss typical HTTPS flows.

Unequal OSPF costs do not normally form equal-cost multipath alternatives in standard behavior.

For comparable OSPF routes, lower cost is preferred rather than higher.

MAC address ordering does not override the OSPF SPF path cost calculation.

RFC1918 private ranges are 10/8, 172.16/12 and 192.168/16; 169.254/16 has different status.

IPv4 link-local addresses are not intended to be routed across the public Internet.

169.254.22.14 is an IPv4 address; IPv6 SLAAC uses a separate 128-bit addressing process.

That is not a requirement of per-VLAN spanning tree; each VLAN can have distinct bridge priorities and root.

First-hop redundancy elections and STP root election do not inherently set one another.

A different root can be healthy; the relevant port roles and topology must be examined rather than assuming failure.

Community strings are legacy access-control information, not link-down notification messages.

Polling can eventually detect an outage, but traps deliver device-generated event notice without waiting for the next manager request.

A slow polling cycle may not report the event until much later and is not an asynchronous notification.

ARP adjacency is a forwarding prerequisite, not the northbound controller management API.

ASIC forwarding is data-plane operation and is not the application interface for intent policy.

Frame integrity checking is low-level interface processing, separate from controller policy access.

An inactive primary does not establish that the backup entered the RIB or that ISP-B data-plane forwarding works.

The intended verification should show that the backup static is installed and its actual next-hop forwarding works.

Configured lines can remain while a route is unusable; operational installation and traffic forwarding must both be verified.

A label cannot enforce access control, auditing, or credential rotation when the plaintext file remains shared.

Increasing copies of plaintext secrets broadens the attack surface rather than securing privileged access.

Rotation cannot protect confidentiality if each new secret is immediately exposed to the same uncontrolled group of readers.

The .100 network identifier is not a normal usable host in this traditional /30 arrangement.

The .104 address begins the next /30 block, not the same point-to-point subnet.

Those are the conventional network and broadcast addresses in this /30 and cannot be regular interface host addresses.

A relay helps obtain a lease, but the client still needs appropriate gateway configuration for remote destinations.

A relay identifies the source subnet; assigning management VLAN addresses to clients in VLAN 65 causes incorrect Layer 3 connectivity.

Changing the mask to /8 does not match the stated /24 SVI and may create broad incorrect ARP expectations.

Neither protocol automatically forces its election outcome onto the other.

HSRP handles first-hop gateway continuity and does not remove switched-loop protection.

Even if valid, split root/gateway placement may create suboptimal Layer 2 forwarding and should be reviewed.