I have some complex multi-thread C++ code in which I do some internal signaling with udp sockets: snd: 127.0.0.1:6501 rcv: 127.0.0.1:6502 On my new F15_64 box, I usually get: errno=98=Address already in use in response to the bind command when I bring up the snd socket (which is first up) even when I just come up from power off. Rarely, it works. I have no idea why. If I ignore the 98 error, I get a write error on the socket. Even when it fails, netstat -uap shows the socket, which is not a surprise, and it is not there when the program is not up. Now on my old CentOS 5_32 box, the same code (but, of course, compiled for 32) works with no problem. I can start and stop it rapidly with no problem. Thanks for your suggestions. Mike. -- Michael D. Berger m.d.berger@xxxxxxxx http://www.rosemike.net/ -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines