NetLights 1.9.4

NetLights 1.9.4

A correctness release: NetLights was naming the wrong uplink.

The primary egress is now the interface that actually wins. With Wi-Fi and Ethernet both
up and both holding a default route, the status line picked whichever default route the
kernel happened to list first — which carries no priority — so a docked laptop could be told
its traffic left over Wi-Fi while it was really going out Ethernet. The Routes tab, which
ranks correctly, sat next to it disagreeing. Egress now uses that same ranking: the macOS
network-service order, or the Linux route metric.

Only the winning default route is starred. Every surface marked isDefault, which is
true for every default route — Wi-Fi, Ethernet, the VPN tunnel and any bridge each have
one — so the Routes table appeared to claim four primaries at once. Exactly one row is
marked now.

Link state is now read from the OS, not inferred from interface flags. A Wi-Fi
interface with the radio switched off keeps both IFF_UP and IFF_RUNNING set — it reads
flags=8863, byte for byte the same as a live Ethernet port — while ifconfig reports
status: inactive. NetLights inferred "up" from those flags and so counted switched-off
Wi-Fi, cable-less Thunderbolt ports and idle bridges as up. It now reads
SystemConfiguration's authoritative link state, which agrees with ifconfig on every
interface that reports one; interfaces with no link state (tunnels, loopback) keep the old
inference. Expect the "interfaces up" count to drop, and to be right.

And the primary is now visible where you'd look for it. The app's status bar names the
egress interface and its network, as the terminal dashboard's header always has; the
Interfaces table stars it in the app, the TUI and the browser; and in the graph its chip
takes an orange border and a soft glow.

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Install

brew tap willowhawk-k/tap
brew install --cask netlights

Or download NetLights-1.9.4.zip below and drag it into Applications. Signed and notarized
with an Apple Developer ID. Also on the Mac App Store.

Linux: build from source — see docs/BUILDING.md.