On 2011-05-13 03:49, Rob Landley wrote: > 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?
-redir (like all the other free-standing usernet switches) is legacy as it can only be applied to a single usernet instance. And it's highly confusing to which it refers. That's also documented in the man page. > 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. Where did you find this? A quick grep did not reveal the location to me. qemu-options.hx states it clearly: @item hostfwd=[tcp|udp]: [...] This option can be given multiple times. Jan
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