On Tue, 4 Mar 2008, Jeff Dike wrote: > On Tue, Mar 04, 2008 at 08:14:09PM -0500, Robert P. J. Day wrote: > > consider, as a single example, the suggestion on that page that you > > can configure the eth0 device thusly if you have a running UML > > session: > > > > $ uml_mconsole umid eth0=tuntap,,,192.168.0.254 > > > > if i try that, i get: > > > > $ uml_mconsole MwxFu2 eth0=tuntap,,,192.168.1.254 > > ERR Unknown command > > Oops, fixed. That should have been > uml_mconsole umid config eth0=tuntap,,,192.168.0.254 > of course.
ah, now we're making progress, thanks. i apologize for sounding a bit snippy last night but i'd just spent a few hours perusing the net for newbie-level intro stuff on UML and was getting increasingly frustrated by the inconsistent and self-contradictory content i was running across. and the above is just another example of what would be a bit maddening to someone just trying to get some simple networking. so, let me quickly sum up what i've got running. for the purposes of experimentation, since i'm on a fedora 8 system, i've grabbed from http://uml.nagafix.co.uk/ the following: * Fedora8-x86-root_fs.bz2 * kernel32-2.6.24.3.bz2 and verified quickly that, yes, i can run a UML session with those. so far, so good. and now, what it took to get networking running in a very simple way: 1) start UML session with no networking parameters 2) on host, run: $ uml_mconsole DywKnv config eth0=tuntap,,,192.168.1.254 OK $ 3) in the UML session, enable eth0 thusly: UML# ifconfig eth0 192.168.1.253 up UML# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 9E:14:C3:96:2D:4A inet addr:192.168.1.253 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::9c14:c3ff:fe96:2d4a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:25 errors:0 dropped:0 overruns:0 frame:0 TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3846 (3.7 KiB) TX bytes:308 (308.0 b) Interrupt:5 UML# 4) from the host, can i ping the UML session? $ ping 192.168.1.253 PING 192.168.1.253 (192.168.1.253) 56(84) bytes of data. 64 bytes from 192.168.1.253: icmp_seq=1 ttl=64 time=0.957 ms 64 bytes from 192.168.1.253: icmp_seq=2 ttl=64 time=0.229 ms ... yee ha! and what about ... 5) from the UML session, can i ping the host? UML# ping 192.168.1.254 ping: error while loading shared libraries: libidn.so.11: \ cannot open shared object file: No such file or directory UML# hmmmm ... not so good, but ssh still seems to work: UML# ssh 192.168.1.254 ... success ... and that's all i was after for the time being. so we're making progress, and i'll document the above at my wiki. but first, a few questions about the above: a) once i run the "uml_mconsole" command on the host, is there a way to verify the result of that operation? running "ifconfig" doesn't show me any difference, so how could one verify that that operation finished correctly? "ifconfig" won't show a working "tap0" interface until networking is brought up in the UML session, so is there any indication at all on the host side until that happens? b) what must be true about both the host kernel and the guest kernel for simple networking to work? i can't think of anything more frustrating for a beginner than to fight with networking for a while, only to learn that either his host or guest kernel wasn't configured and built with the required functionality. so it would be nice to have a checklist for both kernels. more later. rday -- ======================================================================== Robert P. J. Day Linux Consulting, Training and Annoying Kernel Pedantry: Have classroom, will lecture. http://crashcourse.ca Waterloo, Ontario, CANADA ======================================================================== ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
