[CentOS] ifcfg-rh: error: Unknown connection type 'Bridge'

[Nico Kadel-Garcia]

On Sun, Jan 23, 2011 at 2:46 AM, Tom H <tomh0665 at gmail.com> wrote:
> On Sat, Jan 22, 2011 at 11:28 PM, Nico Kadel-Garcia <nkadel at gmail.com> wrote:

>> The key to *keeping* it off in RHEL 6, and I assume in CentOS 6, is
>> the setting NM_CONTROLLED="no" in the
>> /etc/sysconfig/network-scripts/ifcfg-* files. This is a new setting in
>> RHEL 6, and I'm having difficulty finding documentation for it, but it
>> seems to work in keeping NetworkManager's greedy little paws off my
>> stable settings.
>
> In both the RH and FP docs, the only reference that I've found is in
> this section:
> http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization/sect-Virtualization-Network_Configuration-Bridged_networking_with_libvirt.html

Yeah, "libvirt" is not your friend for network configurations, nor is
the "bridged" network setup used for KVM. It's not well supported,
especially in the documentation.

> RHEL 5 has a similar section so it's not a new setting, just a
> not-well-documented one (like a DNS or DHCP one that you referred to
> recently).

libvirt is also not your friend for correct documentation. This *will
not work* for RHEL 5 or CentOS 5, because there is nothing in the
actual /etc/sysconfig/network-scripts to support it. You have to
disable NetworkManager with chkconfig or rip it out, which is actually
safer.