[Bridge] BRCTL is displaying only 32 bridge interfaces even /proc/net/dev is showing more then that

Stephen Hemminger shemminger at vyatta.com
Mon Mar 30 18:03:31 PDT 2009

On Fri, 20 Mar 2009 15:15:50 +0530 (IST)
rahul bhardwaj <rahul_bhardwaj36in at yahoo.co.in> wrote:

> Hi All,
> I am using Linux 2.6.15 kernel. I want to create 4094 bridge interface but I am able to see only 32 bridge interfaces with the help of "brctl show". I am able see other interfaces into /proc/net/dev but brctl is not showing more then 32. It is also not allowing any operations (add/del) over those interfaces. Is it correct behaviour or I have do some changes in some settings. 
> Could anybody please help me in this? 
2.6.15 is old, so I could well be wrong, but as I remember:
The old interface (via ioctl) only had room for 32 bridges, so probably that
was it. When interface changed to sysfs that was addressed.

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