This bug prevents hosting games and has been a bug since WINE 0.9.46 or so. The best way to get around it is to patch and compile WINE with Scott Lindeneau’s latest patch entitled, “General AcceptEx Patch - No Data_length Support”. However, this patch just barely broke with WINE 1.1.12.
There are a number of other ‘workarounds’ that are included in that bug. Most notably the one entitled, “Disable completion port creation” seems to work the best, but I don’t know how that one affects other programs.
Your problem is system firewall port in YAST as mentioned.
I also cannot alt+tab from Frozen Throne.
Other than that 11.1 + wine gives me great DOTA experience.
EDIT: Sorry did not read above post. If you get it working please reply. PS - check out application “snoopy” for WC3 hosting as it provides ping / country tests and Banlists.