On 05/12/2011 08:19 PM, Vincent Palatin wrote: >>> First of all, as you have 2 totally separated subnets in your setup, I >>> think your command-line should use "vlan=" parameter to isolate them, >>> else you will end up with some random routing/broadcasting (and random >>> tends to change over time). >> >> Does the kernel need some sort of vlan support compiled into it for this >> to work, or can the kernel not care? > > You don't need anything in your kernel, this is for Qemu network layer > configuration.
Oh good. (The kernel has a couple different VLAN config options, plus cisco has vlan stuff in its routers... I've been trying not to get any of this complexity on me.) >>> In my understanding, the Linux kernel might assign interface number >>> depending on the order the interfaces are appearing. >> >> It's going in PCI bus order. And the _interfaces_ are still happily in >> PCI bus order both before and after this commit. What's changing is the >> association between interface and -net user or -net tap. >> >> The first one, with macaddr 11:11:11, is always eth0. But before the >> patch, eth0 is -net user, and after the patch eth0 is -net tap. > > So, did you try the vlan parameter which is supposed to associate each > interface with the proper thing (IMO the command line order should not > have anything to do with it) ? Apparently you cannot stick a vlan on -redir, and if you do the error message is a bit funky (cannot initialize -net user). Good to know... Yup, that fixed it. Thanks. By the way, does -redir only apply to -net user? Actually, reading qemu --help it looks like I should be using hostfwd= but the documentation on that is REALLY WEIRD: This option can not be given multiple times, but multiple rules may be combined. ... To combine two or more hostfwd rules, simply use a comma as a delimiter. For example, to combine the two rules mentioned in the examples above, use the following: #on the host qemu -net user,hostfwd=tcp:127.0.0.1:6001-:6000,hostfwd=tcp:5555-::23 Define "may not be given multiple times"...? Oh well, specifying one of 'em seems to work. Thanks. As you can tell, confusion is sort of my ground state, Rob
