Thanks for this, and I will use this scenario if I can't get slip working.
Slirp's performance is not so hot, which is the only reason I'm avoiding it.
> Subject: Re: [uml-user] help getting slip networking going > From: email@example.com > To: firstname.lastname@example.org > CC: email@example.com > Date: Fri, 24 Dec 2010 23:59:08 +0100 > > Hello, > I have no direct answer for the slip (I thought it war slirp) > but the cloonix-8.01 embeds an uml openwrt backfire and an uml lenny > and has its own slirp to go out to the internet without going through > the host'ip stack. > see at cloonix.net or clownix.net for the set of tools to get a running > uml machine that is ready to surf the web. > I hope this helps. > > > > Le vendredi 24 décembre 2010 à 12:09 -0800, Wil Barath a écrit : > > I 've looked through the docs and googled the heck out of this list > > and the 'net, but can't find a single working example of a slip > > setup. > > > > > > I need to use slip because I am running the UML in a VPS (with no > > kernel tun/tap support, exactly the situation pointed out in the docs > > as the only reason to use slip) > > > > > > There's a lot of commentary about how slip was the first way UML was > > connected to the 'net and how it has drawbacks, but unfortunately the > > examples present in the documentation make a lot of assumptions about > > the host. I get the feeling the author genuinely believed that using > > slip was a bad thing, and so avoided giving a useful example as a way > > of discouraging its use. > > > > > > > > > > Here's my config so far (all taken from the docs, but not verbatim, as > > it would collide with my upstream router) > > > > > > #HOST ./linux-2.6.24-rc7 ubda=Fedora.cow,FedoraCore5-x86-root_fs > > eth0=slip,192.168.0.1 > > > > > > [... loading noise...] > > > > > > [root@localhost ~]# dmesg > > Linux version 2.6.24-rc7-dirty (firstname.lastname@example.org) (gcc > > version 4.1.2 20070925 (Red Hat 4.1.2-27)) #97 Mon Jan 7 11:18:24 EST > > 2008 > > [...snip...] > > net_namespace: 64 bytes > > Using 2.6 host AIO > > NET: Registered protocol family 16 > > NET: Registered protocol family 2 > > Time: itimer clocksource has been installed. > > Switched to high resolution mode on CPU 0 > > IP route cache hash table entries: 1024 (order: 0, 4096 bytes) > > TCP established hash table entries: 2048 (order: 2, 16384 bytes) > > TCP bind hash table entries: 2048 (order: 1, 8192 bytes) > > TCP: Hash tables configured (established 2048 bind 2048) > > TCP reno registered > > Checking host MADV_REMOVE support...<3>MADV_REMOVE failed, err = -38 > > Can't release memory to the host - memory hotplug won't be supported > > mconsole (version 2) initialized on /root/.uml/wOqluE/mconsole > > [...snip...] > > TCP cubic registered > > NET: Registered protocol family 1 > > NET: Registered protocol family 17 > > Initialized stdio console driver > > Console initialized on /dev/tty0 > > console [tty0] enabled > > Initializing software serial port version 1 > > Choosing a random ethernet address for device eth0 > > Netdevice 0 (66:35:f6:cf:fb:ab) : SLIP backend - SLIP IP = 192.168.0.1 > > console [mc-1] enabled > > [...snip...] > > Setting slip line discipline: Invalid argument > > uml_net : waitpid process 15689 failed, errno = 10 > > slip_tramp failed - err = 10 > > > > > > [root@localhost ~]# ifconfig > > lo Link encap:Local Loopback > > inet addr:127.0.0.1 Mask:255.0.0.0 > > UP LOOPBACK RUNNING MTU:16436 Metric:1 > > RX packets:0 errors:0 dropped:0 overruns:0 frame:0 > > TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 > > collisions:0 txqueuelen:0 > > RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) > > > > > > [root@localhost ~]# ifconfig eth0 up > > Setting slip line discipline: Invalid argument > > uml_net : waitpid process 27924 failed, errno = 10 > > get_ifname failed, err = 22 > > SIOCSIFFLAGS: Invalid argument > > [root@localhost ~]# route > > Kernel IP routing table > > Destination Gateway Genmask Flags Metric Ref > > Use Iface > > 169.254.0.0 * 255.255.0.0 U 0 0 > > 0 lo > > > > > > [from the docs, 2 steps to configure the interface for slip, albeit > > not explicitly given.] > > > > > > [root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 > > DEVICE=eth0 > > ONBOOT=yes > > IPADDR=192.168.0.100 > > GATEWAY=192.168.0.1 > > NETMASK=255.255.255.0 > > > > > > [root@localhost ~]# halt > > > > > > #HOST ifconfig sl0 192.168.0.1 pointopoint 192.168.0.100 up > > SIOCSIFADDR: No such device > > sl0: unknown interface: No such device > > SIOCSIFDSTADDR: No such device > > sl0: unknown interface: No such device > > sl0: unknown interface: No such device > > > > > > Best guess at this point is I'm missing something here to create the > > virtual slip network interface, and possibly the other portion is > > failing because it is not present, but the errors are not so helpful. > > "Setting slip line discipline: Invalid argument" "uml_net : waitpid > > process 27924 failed, errno = 10" "get_ifname failed, err = 22" > > "SIOCSIFFLAGS: Invalid argument" - sounds like the guest side (or > > echoing the host side, vague) was unable to find the slip interface. > > > > > > > > > > ------------------------------------------------------------------------------ > > Learn how Oracle Real Application Clusters (RAC) One Node allows customers > > to consolidate database storage, standardize their database environment, and, > > should the need arise, upgrade to a full multi-node Oracle RAC database > > without downtime or disruption > > http://p.sf.net/sfu/oracle-sfdevnl > > _______________________________________________ User-mode-linux-user mailing list Useremail@example.com https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user > >