On Wednesday 23 August 2006 22:08, Kathy Kost wrote:
> Nope. Once an alias is created, however which way, the system comes up
> with a "16 alias max" message. Don't recall the actual message. The
> vserver would not restart and I had to remove the interfaces and reboot
> the entire server.
>
> Kathy
>
> > Does it help to add ip's with the ip add ... command instead of using
> > ifconfig? Aliases are sooo last millennium.
> >
> >
> > /Benny
>
The kernel patch has a maximum of IP addresses per network context defined.
Context-association of IP addresses is not optimized, thus many addresses
cause some overhead when checking if incoming packets may be delivered to a
guest. (check if IP is available to a guest)
In addition you have 12 bytes allocated per possible IP address:
12 * 16 = 192 bytes (even if guest has just 1 IP assigned to it)
For the define limiting the count of IP addresses, see
include/linux/vserver/network.h (line 11):
@define NB_IPV4ROOT 16
Note that you may need to check what header the userspace tools get compiled
against.
Bruno
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Received on Wed Aug 23 21:22:41 2006