Network gets tired, falls asleep

[Neal Becker <ndbecker2 verizon net>]

Testing NM on FC3 using driverloader.  Seems to work for a while, but when I 
left it on overnight it stopped working.  Here's some info:

Jan 25 20:40:47 nbecker2 kernel: eth1: New link status: Connected (0001)
Jan 25 20:40:54 nbecker2 NetworkManager:   found! (encrypted) 
Jan 25 20:40:54 nbecker2 NetworkManager:     SWITCH: best device changed
Jan 25 20:40:54 nbecker2 NetworkManager: nm_state_modification_monitor(): 
beginning activation for device 'eth1'
Jan 25 20:40:55 nbecker2 NetworkManager: AP_NEED_KEY: access point is 
encrypted, and a key exists.  No new key needed.
Jan 25 20:40:59 nbecker2 NetworkManager: nm_device_set_wireless_config (eth1) 
using essid 'nbecker', with Shared Key authentication.
Jan 25 20:41:08 nbecker2 NetworkManager: Restarting mDNSResponder. 
Jan 25 20:41:08 nbecker2 NetworkManager: nm_device_activation_worker(eth1): 
device activated
Jan 25 20:41:08 nbecker2 NetworkManager: nm_state_modification_monitor() 
activated device eth1
Jan 25 20:51:06 nbecker2 ntpd[2975]: sendto(195.197.174.39): Invalid argument
Jan 25 20:51:08 nbecker2 ntpd[2975]: sendto(207.177.51.228): Invalid argument
Jan 25 20:51:11 nbecker2 ntpd[2975]: sendto(206.222.212.234): Invalid argument
Jan 25 20:59:33 nbecker2 kernel: usbcore: deregistering driver driverloader
Jan 25 20:59:34 nbecker2 NetworkManager: nm_device_is_up() could not get flags 
for device eth1.  errno = 19
Jan 25 20:59:34 nbecker2 NetworkManager: nm_device_set_up_down() could not get 
flags for device eth1.  errno = 19
Jan 25 20:59:34 nbecker2 net.agent[11142]: remove event not handled
Jan 25 20:59:34 nbecker2 net.agent[11150]: remove event not handled
Jan 25 20:59:35 nbecker2 NetworkManager: nm_device_get_mode (eth1): error 
setting card to Infrastructure mode.  errno = 19
Jan 25 20:59:35 nbecker2 NetworkManager: nm_device_get_mode (eth1): error 
setting card to Infrastructure mode.  errno = 19
Jan 25 20:59:35 nbecker2 NetworkManager: nm_device_set_mode (eth1): error 
setting card to Infrastructure mode.  errno = 19
Jan 25 20:59:35 nbecker2 NetworkManager: nm_device_get_frequency(): error 
getting frequency for device eth1.  errno = 19
Jan 25 20:59:35 nbecker2 NetworkManager: nm_device_get_essid(): error getting 
ESSID for device eth1.  errno = 19
Jan 25 20:59:35 nbecker2 kernel: usbcore: registered new driver driverloader
Jan 25 20:59:35 nbecker2 kernel: driverloader: bcmwl564.sys: 
0xffffff0001242000..0xffffff00012bb000 entry = ffffff0001249cd0 (pbase = 
0x10000)
Jan 25 20:59:35 nbecker2 kernel: ACPI: PCI interrupt 0000:02:02.0[A] -> GSI 17 
(level, low) -> IRQ 217
Jan 25 20:59:35 nbecker2 kernel: 0000:02:02.0: cache line size not set; 
forcing 32
Jan 25 20:59:35 nbecker2 kernel: eth1: New link status: Disconnected (0002)
Jan 25 20:59:37 nbecker2 kernel: ip_tables: (C) 2000-2002 Netfilter core team
Jan 25 20:59:37 nbecker2 kernel: eth1: New link status: Connected (0001)