Comment 7 for bug 1187005

Seems like NetworkManager never receives the "wake up" signal... Who's responsible for sending it?

(snip)
NetworkManager[21778]: <info> Policy set 'Auto XXXXX' (eth3) as default for IPv4 routing and DNS.
NetworkManager[21778]: <info> DNS: starting dnsmasq...
NetworkManager[21778]: <warn> dnsmasq not available on the bus, can't update servers.
NetworkManager[21778]: <error> [1370694157.41643] [nm-dns-dnsmasq.c:402] update(): dnsmasq owner not found on bus: Could not get owner of name 'org.freedesktop.NetworkManager.dnsmasq': no such name
NetworkManager[21778]: <warn> DNS: plugin dnsmasq update failed
NetworkManager[21778]: <info> Writing DNS information to /sbin/resolvconf
NetworkManager[21778]: <info> Activation (eth3) successful, device activated.
NetworkManager[21778]: <warn> dnsmasq appeared on DBus: :1.273
NetworkManager[21778]: <info> Writing DNS information to /sbin/resolvconf
NetworkManager[21778]: <info> sleep requested (sleeping: no enabled: yes)
NetworkManager[21778]: <info> sleeping or disabling...
NetworkManager[21778]: <info> (eth3): device state change: activated -> unmanaged (reason 'sleeping') [100 10 37]
NetworkManager[21778]: <info> (eth3): deactivating device (reason 'sleeping') [37]
NetworkManager[21778]: <info> (eth3): canceled DHCP transaction, DHCP client pid 21803
NetworkManager[21778]: <warn> DNS: plugin dnsmasq update failed
NetworkManager[21778]: <info> Removing DNS information from /sbin/resolvconf
NetworkManager[21778]: <info> (eth3): cleaning up...
NetworkManager[21778]: <info> (eth3): taking down device.
NetworkManager[21778]: <info> (eth2): device state change: unavailable -> unmanaged (reason 'sleeping') [20 10 37]
NetworkManager[21778]: <info> (eth2): cleaning up...
NetworkManager[21778]: <info> (eth2): taking down device.