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On Monday 02 August 2004 12:02, Miroslav Zubcic wrote: > I had problems with b44 module on 2.6.6 kernel, but this was resolved > with patch from Pekka Pietikainen on this list, and later merged in > 2.6.7 kernel. Thanks Pekka and Jeff. > > Meanwhile, I have discovered new bug in this module. When opening raw > socket, network card will stop sending and receiveing packets. > > For example, if I start `nmap -v -sS 192.168.1.70'. nmap(1) freezes > and waits forever. While nmap(1) is active (and trying to do it's > job), I cannot do anything on the net. Existing ssh connections are > freezed and unresponsive. If I interrupt nmap, everything comes back > to normal after 1-2 seconds. Provide strace of hung nmap. > Only working mode for nmap(1) is: "nmap -v -sT -P0". This mode will > not freeze broadcom ethernet card. > > However, I have found one workaround. If I start tcpdump(8) in one > xterm on eth interface to wait for traffic, and "nmap -v -sS" in other > window, nmap (and all other active or new connections, like ssh, http) > are working without problem. So, if PROMISC is set on interface > (tcpdump will set this flag when started, and remove on interrupt), > everything works as expected. Of course, if I stop tcpdump(8), and > start nmap(1) again, it will not work, and network will be unusable > until I kill nmap(1). In normal mode without nmap(1), that is - > tcp,udp ssh/http/imap/smtp ... there is no visible problems. dmesg(8) > does not report anything unusual, neither logfiles do. Does just setting promisc with ifconfig or ip tool helps? > I hope this is enough info. -- vda - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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