Ethernet addressing, DHCP roles, Wi-Fi provisioning and recovery when a connection fails. Define user-visible states and diagnostic evidence as well as the successful connection path.
Before changing the Wi-Fi connection carrying a remote management session, create a finite rollback checkpoint in the local NetworkManager daemon. Confirm the new path only after testing it, then destroy that exact checkpoint. The safety mechanism must survive the management client’s disappearance; a timer inside the disconnected remote shell is the wrong owner. This procedure…
A multi-link client can stop using one radio link without losing its Wi-Fi association or application session. Treat advertised links, associated links, traffic mappings and useful connectivity as separate observations. Otherwise a dashboard can announce a disconnect that never happened, or display healthy Wi-Fi while the service has already stalled. This guide pins its application-facing…
A Wi-Fi RTT callback must be decoded as a status-bearing result, not as an unconditional distance. Establish feature support and current availability, request only the intended responder mode, then inspect each peer’s status before reading measurement fields. A failed result must never become zero distance or reuse an old successful value without an explicit stale…
A Wi-Fi Direct persistent group is retained configuration for a group relationship, not an always-running network. Recovery must establish which device is the Group Owner, whether the live group exists, whether both peers retain compatible state, and whether the application endpoint has returned. A remembered peer name or local network identifier answers only part of…
Discovering a Wi-Fi Aware service does not create a usable data socket. An application must own the Aware attachment, discovery session, peer handle, network request and socket as separate resources. Give each operation a lifetime and reject callbacks belonging to retired work before allowing an instrument transfer to begin. This guide uses Android 15, API…
A fixed-memory device cannot promise to retain every access point in an arbitrarily dense environment. It can promise bounded storage, explicit truncation, stable pages and selection of the exact record the user chose. Separate the stack’s scan cache from the product’s presentation cache, then define admission, retention and stale-selection behavior for each. This guide uses…
A scan request can complete successfully while an active control link suffers unacceptable interruption. Measure the longest useful-service gap and the actual off-channel intervals separately. Total scan duration is not automatically the outage duration: a radio may revisit its home channel, queue traffic, offload scanning or share work across hardware resources. This guide uses Linux…
Packet aggregation can improve airtime efficiency, but a late control burst does not prove that aggregation caused the delay. Separate application batching, host queue residence, active aggregation state, radio transmission and receiver processing. Then compare matched workloads and supported configuration changes. A driver patch should follow that evidence, not substitute for it. This guide uses…
A gateway can upload at an acceptable average rate while control requests miss their deadline. The useful investigation is whether live traffic waits in a persistent queue, where that queue sits, and whether the proposed queue management can actually reach it. A throughput result alone does not answer those questions. This guide targets a Linux…
A high reported Wi-Fi bitrate and low useful delivery are compatible observations. The bitrate describes a radio transmission parameter; useful delivery includes contention, retries, protocol work and endpoint processing. The practical task is to align direction, measurement window and counter meaning before deciding which component limits the product. This guide uses Linux 6.12 nl80211/mac80211 statistics…