https://bugs.winehq.org/show_bug.cgi?id=42412
--- Comment #22 from bobben@wigilius.se --- Made some more captures this time with Wireshark and tcpdump inside Amiga.
The capture from Windows is with default MTU (1500) inside AmigaOS and downloading a 500kb file from local file server over FTP, which gives matching file size and md5 sum.
The capture from Mac (Wine 2.0 Devel) and tcpdump (in AmigaOS) is with mtu 1488 and same 500kb file over ftp, which gives matching file size and md5 sum.
The other from Mac (Wine 2.0 Devel) and tcpdump (in AmigaOS) is with default mtu 1500 and same 500kb file over ftp, which gives matching file size but wrong md5 sum.
So, mtu 1488 seems to work OK in Wine Mac, although painfully slow - about 17Kb/sec
All captures is with WinUAE 3.4 32bit and 32bit Wine on Mac.