@Kalamatee I stumbled over a 64bit bug in ArosTCP, but I am not sure if I have the actual sources. The fix would be: diff --git a/workbench/network/stacks/AROSTCP/bsdsocket/api/gethostnamadr.c b/workbench/network/stacks/AROSTCP/bsdsocket/api/gethostnamadr.c index 8a32476a89..849cd14e12 100644 --- a/workbench/network/stacks/AROSTCP/bsdsocket/api/gethostnamadr.c +++ b/workbench/network/stacks/AROSTCP/bsdsocket/api/gethostnamadr.c @@ -401,7 +401,7 @@ D(bug("[AROSTCP](gethostnameadr.c) gethostbyname: name IS an IP address\n")); } if (allocDataBuffer(&libPtr->hostents, - sizeof (struct hostent) + 28) == FALSE) { + sizeof (struct hostent) + 3 * sizeof(u_long) + strlen(name) + 1) == FALSE) { writeErrnoValue(libPtr, ENOMEM); h_errno = 0; return NULL; The fixed 28 is too small when pointers are 64bit