I think I know what's going on. 127.0.0.1 is assigned to the loopback device lo. But it seems that widelands tries to use the LAN or Wi-Fi interface and ignores the loopback device on linux.
I think I know what's going on. 127.0.0.1 is assigned to the loopback device lo. But it seems that widelands tries to use the LAN or Wi-Fi interface and ignores the loopback device on linux.