In the following part of syslog it appears, though, that NM is managing eth0 after saying that it's "now unmanaged"!
May 8 18:36:49 k8u NetworkManager: <info> (eth0): now unmanaged
[...]
May 8 18:36:51 k8u dhclient: There is already a pid file /var/run/dhclient.eth0.pid with pid 3094
May 8 18:36:51 k8u dhclient: killed old client process, removed PID file
May 8 18:36:51 k8u dhclient: Internet Systems Consortium DHCP Client V3.1.1
May 8 18:36:51 k8u dhclient: Copyright 2004-2008 Internet Systems Consortium.
May 8 18:36:51 k8u dhclient: All rights reserved.
May 8 18:36:51 k8u dhclient: For info, please visit http://www.isc.org/sw/dhcp/
May 8 18:36:51 k8u dhclient:
May 8 18:36:51 k8u dhclient: wmaster0: unknown hardware address type 801
May 8 18:36:51 k8u dhclient: parse_option_param: Bad format a
May 8 18:36:51 k8u dhclient: wmaster0: unknown hardware address type 801
May 8 18:36:51 k8u dhclient: Listening on LPF/eth0/00:0d:61:ed:05:82
May 8 18:36:51 k8u dhclient: Sending on LPF/eth0/00:0d:61:ed:05:82
May 8 18:36:51 k8u dhclient: Sending on Socket/fallback
May 8 18:36:51 k8u dhclient: DHCPRELEASE on eth0 to 192.168.1.254 port 67
May 8 18:36:51 k8u NetworkManager: <info> (eth0): carrier now OFF (device state 1)
May 8 18:36:51 k8u dhclient: Internet Systems Consortium DHCP Client V3.1.1
May 8 18:36:51 k8u dhclient: Copyright 2004-2008 Internet Systems Consortium.
May 8 18:36:51 k8u dhclient: All rights reserved.
May 8 18:36:51 k8u dhclient: For info, please visit http://www.isc.org/sw/dhcp/
May 8 18:36:51 k8u dhclient:
May 8 18:36:51 k8u dhclient: wmaster0: unknown hardware address type 801
May 8 18:36:51 k8u NetworkManager: <info> (eth0): carrier now ON (device state 1)
In the following part of syslog it appears, though, that NM is managing eth0 after saying that it's "now unmanaged"!
May 8 18:36:49 k8u NetworkManager: <info> (eth0): now unmanaged dhclient. eth0.pid with pid 3094 www.isc. org/sw/ dhcp/ 00:0d:61: ed:05:82 00:0d:61: ed:05:82 www.isc. org/sw/ dhcp/
[...]
May 8 18:36:51 k8u dhclient: There is already a pid file /var/run/
May 8 18:36:51 k8u dhclient: killed old client process, removed PID file
May 8 18:36:51 k8u dhclient: Internet Systems Consortium DHCP Client V3.1.1
May 8 18:36:51 k8u dhclient: Copyright 2004-2008 Internet Systems Consortium.
May 8 18:36:51 k8u dhclient: All rights reserved.
May 8 18:36:51 k8u dhclient: For info, please visit http://
May 8 18:36:51 k8u dhclient:
May 8 18:36:51 k8u dhclient: wmaster0: unknown hardware address type 801
May 8 18:36:51 k8u dhclient: parse_option_param: Bad format a
May 8 18:36:51 k8u dhclient: wmaster0: unknown hardware address type 801
May 8 18:36:51 k8u dhclient: Listening on LPF/eth0/
May 8 18:36:51 k8u dhclient: Sending on LPF/eth0/
May 8 18:36:51 k8u dhclient: Sending on Socket/fallback
May 8 18:36:51 k8u dhclient: DHCPRELEASE on eth0 to 192.168.1.254 port 67
May 8 18:36:51 k8u NetworkManager: <info> (eth0): carrier now OFF (device state 1)
May 8 18:36:51 k8u dhclient: Internet Systems Consortium DHCP Client V3.1.1
May 8 18:36:51 k8u dhclient: Copyright 2004-2008 Internet Systems Consortium.
May 8 18:36:51 k8u dhclient: All rights reserved.
May 8 18:36:51 k8u dhclient: For info, please visit http://
May 8 18:36:51 k8u dhclient:
May 8 18:36:51 k8u dhclient: wmaster0: unknown hardware address type 801
May 8 18:36:51 k8u NetworkManager: <info> (eth0): carrier now ON (device state 1)