### What this changes - Adds a MAC validity predicate for adapter entries. - In GetAdaptersInfo, counts adapters with valid physical MAC. - If valid adapters exist, excludes entries with invalid MAC from returned list. ### Why On macOS, pseudo interfaces without usable physical address can appear before real hardware adapters. Legacy clients that pick the first adapter may send empty MAC and fail auth. ### Scope - Module: iphlpapi - API path: GetAdaptersInfo - Platform impact: mainly macOS-like interface layouts with pseudo/tunnel adapters exposed early. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=59614 -- v2: nsiproxy.sys: Sort adapters to prioritize physical interfaces. https://gitlab.winehq.org/wine/wine/-/merge_requests/10553