Re: [lxc-users] ?= ?==?utf-8?q? "lxc network create" erro

[Stéphane Graber]

Sent a fix:
  https://github.com/lxc/lxd/pull/3614

root@castiana:~# lxc network create dev
Network dev created
root@castiana:~# lxc network delete dev
Network dev deleted


On Tue, Aug 01, 2017 at 11:47:59AM +, Tomasz Chmielewski wrote:
> On Tuesday, August 01, 2017 19:49 JST, Sjoerd  wrote: 
>  
> > >> I vote for feature, since dev is most likely a reserved word, since it's
> > >> short for device in routing terms.
> > > Unless someone has i.e. "prod" and "dev" environments.
> > Unrelate imho. In this case you're trying to create a network, which 
> > implies routing commands under the hood, so than I find it logical that 
> > dev can't be used as name.
> 
> What spec defines that "dev" can't be used as a name in networking world?
> 
> I.e. this one works:
> 
> # ifconfig eth0:dev 1.2.3.4
> # ifconfig eth0:prod 2.3.4.5
> 
> 
> This will also work:
> 
> # ip addr add 10.1.2.3 dev eth0 label eth0:dev
> # ip addr add 10.2.3.4 dev eth0 label eth0:prod
> 
> 
> This one also works:
> 
> # brctl addbr prod
> # brctl addbr dev
> # brctl show
> bridge name bridge id STP enabled interfaces
> dev 8000. no
> prod 8000. no
> 
> 
> 
> -- 
> Tomasz Chmielewski
> https://lxadm.com
> ___
> lxc-users mailing list
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> http://lists.linuxcontainers.org/listinfo/lxc-users

-- 
Stéphane Graber
Ubuntu developer
http://www.ubuntu.com


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Re: [lxc-users] ?==?utf-8?q? ?==?utf-8?q? ?= "lxc network create" erro

[Tomasz Chmielewski]

On Tuesday, August 01, 2017 19:49 JST, Sjoerd  wrote: 
 
> >> I vote for feature, since dev is most likely a reserved word, since it's
> >> short for device in routing terms.
> > Unless someone has i.e. "prod" and "dev" environments.
> Unrelate imho. In this case you're trying to create a network, which 
> implies routing commands under the hood, so than I find it logical that 
> dev can't be used as name.

What spec defines that "dev" can't be used as a name in networking world?

I.e. this one works:

# ifconfig eth0:dev 1.2.3.4
# ifconfig eth0:prod 2.3.4.5


This will also work:

# ip addr add 10.1.2.3 dev eth0 label eth0:dev
# ip addr add 10.2.3.4 dev eth0 label eth0:prod


This one also works:

# brctl addbr prod
# brctl addbr dev
# brctl show
bridge name bridge id STP enabled interfaces
dev 8000. no
prod 8000. no



-- 
Tomasz Chmielewski
https://lxadm.com
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Re: [lxc-users] ?= =?utf-8?q? "lxc network create" error

[Sjoerd]

On 01-08-17 11:40, Tomasz Chmielewski wrote:

On Tuesday, August 01, 2017 18:04 JST, Sjoerd  wrote:
  


On 30-07-17 17:15, Tomasz Chmielewski wrote:

Bug or a feature?

# lxc network create dev
error: Failed to run: ip link add dev type bridge: Error: either "dev" is duplicate, or 
"bridge" is a garbage.


# lxc network create devel
Network devel created



I vote for feature, since dev is most likely a reserved word, since it's
short for device in routing terms.

Unless someone has i.e. "prod" and "dev" environments.
Unrelate imho. In this case you're trying to create a network, which 
implies routing commands under the hood, so than I find it logical that 
dev can't be used as name.
  

i.e. setting routing can be done like : ip route add 192.168.10.0/24 via
10.2.2.1 dev eth0

But that's a different command.
Yes, but as stated above...you're creating a network device, which needs 
routing applied.
So I can imagine (but for details the developers might be better to 
explain), that lxc (a front-end) will use the ip route command under the 
hood to apply the IP address/routing like : ip route add 192.168.1.0/24 
dev lxdbr1. Just take a look at the output of "ip route list"


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Re: [lxc-users] ?==?utf-8?q? ?==?utf-8?q? "lxc network create" error

[Tomasz Chmielewski]

On Tuesday, August 01, 2017 18:04 JST, Sjoerd  wrote: 
 
> 
> 
> On 30-07-17 17:15, Tomasz Chmielewski wrote:
> > Bug or a feature?
> >
> > # lxc network create dev
> > error: Failed to run: ip link add dev type bridge: Error: either "dev" is 
> > duplicate, or "bridge" is a garbage.
> >
> >
> > # lxc network create devel
> > Network devel created
> >
> >
> I vote for feature, since dev is most likely a reserved word, since it's 
> short for device in routing terms.

Unless someone has i.e. "prod" and "dev" environments.
 
> i.e. setting routing can be done like : ip route add 192.168.10.0/24 via 
> 10.2.2.1 dev eth0

But that's a different command.


> So in you-re case the command would end like : dev dev ...I would be 
> confused by that as well ;)

If we treat it as a feature - then it's an undocumented feature. We would need 
documentation specifying a list of disallowed network names.
 
-- 
Tomasz Chmielewski 
https://lxadm.com
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Re: [lxc-users] "lxc network create" error

[Sjoerd]

On 30-07-17 17:15, Tomasz Chmielewski wrote:

Bug or a feature?

# lxc network create dev
error: Failed to run: ip link add dev type bridge: Error: either "dev" is duplicate, or 
"bridge" is a garbage.


# lxc network create devel
Network devel created


I vote for feature, since dev is most likely a reserved word, since it's 
short for device in routing terms.


i.e. setting routing can be done like : ip route add 192.168.10.0/24 via 
10.2.2.1 dev eth0


So in you-re case the command would end like : dev dev ...I would be 
confused by that as well ;)


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