Hello, There is a segfault in tsocks_accept4() when it is called through syscall() and accept4() isn't called first. It's because tsocks_libc_accept4 is only initialized through accept4() and not syscall(). From what I can tell this is not only a problem with tsocks_accept4() but many other calls made through syscall(). My suggested fix is to replace the native tsocks calls in syscall.c with their libc equivalents. E.g. instead of calling tsocks_accept4(), calling accept4(). Whatever the best fix, I can provide a patch for it given the right direction. **Trac**: **Username**: crystalmaker