Hi, I'm experiencing a quite strange problem when trying to use iptables in UML virtual machines that also use pts consoles in a con0=.
In particular, in the case of booting using (note the 'con0=0) # linux [...] con=null con0=pts the virtual machine boots right, but if I issue a simple 'iptables -L' it hangs. Additionally, a top command in the host enviroment shows the linux process associated to the vm with a very high (closer to 100%) CPU usage. However, same UML kernel, same filesystem, but using the following to boot: # linux [...] con=null In this case, accessing to vm (using for example the network) and issuing 'iptables -L' works fine. Additionally, I've have discovered that pre-loading the iptables related modules at boot time (i.e., adding 'ip_tables' and 'iptable_nat' to /etc/modules in the vm filesystem) avoid the problem even in the case of using con0. The problem is quite annoying, because of I understand that iptables and pts are two quite different functionalities (it's like if touching the rear-view mirror of your car would make the brakes to fail :). Is there any known incompatibility between them, please? Any information or idea towards the solution of the problem (apart of adding the modules to /etc/modules, that more than a definitive solution is a workaround) or its debugging is really welcome... Maybe the UML kernel has to be compiled with specific options? (in that case a working .config would be very useful :) Version information (please, don't hesitate to ask if you want to know anything more): - UML kernel: 2.6.22.4 - Host kernel: 2.6.21-2-686 (Debian) Thanks in advance! Best regards, -------------------- Fermín Galán Márquez CTTC - Centre Tecnològic de Telecomunicacions de Catalunya Parc Mediterrani de la Tecnologia, Av. del Canal Olímpic s/n, 08860 Castelldefels, Spain Room 1.02 Tel : +34 93 645 29 12 Fax : +34 93 645 29 01 Email address: fermin dot galan at cttc dot es ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
