Huw Davies (@huw) commented about dlls/nsiproxy.sys/ip.c:
+ if (num <= *count) + { + entry.addr.s_addr = inet_addr( "239.255.255.250" ); + ipv4_neighbour_fill_entry( &entry, key_data, rw_data, dynamic_data, static_data ); + + if (key_data) key_data = (BYTE *)key_data + key_size; + if (rw_data) rw_data = (BYTE *)rw_data + rw_size; + if (dynamic_data) dynamic_data = (BYTE *)dynamic_data + dynamic_size; + if (static_data) static_data = (BYTE *)static_data + static_size; + } + num++; + } + if_freenameindex( iface_indices ); + } + if (!want_data || num <= *count) *count = num; macOS already has `239.255.255.250` on interfaces that up, so this ends up duplicating that entry.
-- https://gitlab.winehq.org/wine/wine/-/merge_requests/296#note_2529