http://bugs.winehq.org/show_bug.cgi?id=59690 --- Comment #18 from Paul Gofman <pgofman@codeweavers.com> --- I reproduced duplicated user name with Steam version of Command & Conquer Red Alert 3 (Steam game id 17480). However, I could not make the game ever see the peer in the local network (also using Windows on both sides) so could not check if the local multiplayer fully works. The blamed commit, while still looks correct per se, introduced an issue with ws2_32.gethostbyname() which started additionally returning a loopback address for local host name (local host name as in what gethostname shows, not 'localhost'). I sent MR upstream: https://gitlab.winehq.org/wine/wine/-/merge_requests/10825 Could you please confirm if possible if that fully fixes the regressive issues? If not, could you please provide additional info: 1. Exact game name / version reproducing (and how can I get it if that is not Steam version)? 2. Exact reproduction steps. 3. The compressed output with the following logging enabled: WINEDEBUG=+pid,+loaddll,+timestamp,+seh,+unwind,+debugstr,+threadname,+iphlpapi,+winsock ...? -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.