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Re: [patch 2/6] [Network namespace] Network device sharing by view [message #4182 is a reply to message #4169]

Fri, 30 June 2006 18:22

ebiederm
Messages: 1354
Registered: February 2006

Senior Member

jamal <hadi@cyberus.ca> writes:

>> > > Then the pragmatic question becomes how to correlate what you see from
>> > > `ip addr list' to guests.
>> >
>> > on the host ip addr and the one seen on the guest side are the same.
>> > Except one is seen (on the host) on guest0-eth0 and another is seen
>> > on eth0 (on guest).
>>
>> Then what to do if the host system has 10.0.0.1 as a private address on eth3,
>> and then interfaces guest1-tun0 and guest2-tun0 both get address 10.0.0.1
>> when each guest has added 10.0.0.1 to their tun0 device?
>
> Yes, that would be a conflict that needs to be resolved. If you look at
> ip addresses as also belonging to namespaces, then it should work, no?
> i am assuming a tag at the ifa table level.

Yes. The conception is that everything belongs to the namespace,
so it looks like you have multiple instances of the network stack.

Which means through existing interfaces it would be a real problem
if a network device showed up in more than one network stack as
that would confuse things.

Basically the reading and configuration through existing interfaces
is expected to be in the namespace as well which is where the difficulty
shows up.

When you get serious about splitting up roots powers this becomes a real
advantage. Because you might want to have one person responsible for
what would normally be eth0 and another person responsible for eth1.

Anyway Jamal can you see the problem the aliases present to the implementation?

Eric

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[Message index]

		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Andrey Savochkin on Tue, 27 June 2006 09:38
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Daniel Lezcano on Tue, 27 June 2006 11:21
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Tue, 27 June 2006 11:52
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Herbert Poetzl on Tue, 27 June 2006 16:02
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Tue, 27 June 2006 16:47
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Ben Greear on Tue, 27 June 2006 17:19
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Herbert Poetzl on Tue, 27 June 2006 22:52
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Dave Hansen on Tue, 27 June 2006 23:12
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Alexey Kuznetsov on Tue, 27 June 2006 23:42
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Wed, 28 June 2006 03:38
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Herbert Poetzl on Wed, 28 June 2006 13:36
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Wed, 28 June 2006 14:21
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: jamal on Wed, 28 June 2006 13:53
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Sam Vilain on Thu, 29 June 2006 21:07
		strict isolation of net interfaces By: Cedric Le Goater on Thu, 29 June 2006 22:14
		Re: strict isolation of net interfaces By: Sam Vilain on Fri, 30 June 2006 02:48
		Re: strict isolation of net interfaces By: Andrey Savochkin on Mon, 03 July 2006 14:53
		Re: strict isolation of net interfaces By: Sam Vilain on Tue, 04 July 2006 03:00
		Re: strict isolation of net interfaces By: Daniel Lezcano on Tue, 04 July 2006 12:29
		Re: strict isolation of net interfaces By: serue on Fri, 30 June 2006 02:39
		Re: strict isolation of net interfaces By: Cedric Le Goater on Fri, 30 June 2006 08:56
		Re: strict isolation of net interfaces By: Herbert Poetzl on Mon, 03 July 2006 13:36
		Re: strict isolation of net interfaces By: Daniel Lezcano on Fri, 30 June 2006 12:23
		Re: strict isolation of net interfaces By: ebiederm on Fri, 30 June 2006 14:20
		Re: strict isolation of net interfaces By: Daniel Lezcano on Fri, 30 June 2006 15:22
		Re: strict isolation of net interfaces By: ebiederm on Fri, 30 June 2006 17:58
		Re: strict isolation of net interfaces By: serue on Fri, 30 June 2006 16:14
		Re: strict isolation of net interfaces By: ebiederm on Fri, 30 June 2006 17:41
		Re: strict isolation of net interfaces By: ebiederm on Fri, 30 June 2006 18:09
		Re: strict isolation of net interfaces By: Sam Vilain on Tue, 04 July 2006 13:13
		Re: strict isolation of net interfaces By: Daniel Lezcano on Tue, 04 July 2006 13:19
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: jamal on Fri, 30 June 2006 00:15
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Herbert Poetzl on Fri, 30 June 2006 03:35
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Andrey Savochkin on Fri, 30 June 2006 07:45
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: jamal on Fri, 30 June 2006 13:50
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Andrey Savochkin on Fri, 30 June 2006 15:01
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Fri, 30 June 2006 18:22
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: jamal on Fri, 30 June 2006 21:51
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Sat, 01 July 2006 00:50
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Wed, 28 June 2006 14:51
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Alexey Kuznetsov on Tue, 27 June 2006 16:49
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Andrey Savochkin on Tue, 27 June 2006 11:55

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