Výpadky internetu UPC - mvneta d0030000.ethernet eth0: Link is Down

Začal vypadávat net, děje se random, ale nejčastěji někdy v noci.
Parkrat jsem rebootoval, problem to vyresilo. Ted jsem na to kouknul. V logu tohle

Nov 28 02:29:34 hlogw kernel: [190852.961297] mvneta d0030000.ethernet eth0: Link is Down
Nov 28 01:29:34 hlogw netifd: Network device 'eth0' link is down
Nov 28 01:29:34 hlogw netifd: Interface 'wan' has link connectivity loss
Nov 28 01:29:34 hlogw netifd: wan (1310): udhcpc: received SIGTERM
Nov 28 01:29:34 hlogw netifd: wan (1310): udhcpc: entering released state
Nov 28 01:29:34 hlogw netifd: wan (1310): Command failed: Permission denied
Nov 28 01:29:34 hlogw netifd: Interface 'wan' is now down
Nov 28 01:29:34 hlogw netifd: Interface 'wan' is disabled
Nov 28 02:29:34 hlogw kernel: [190853.168452] mvneta d0030000.ethernet eth0: PHY [d0032004.mdio-mii:01] driver [Marvell 88E1510] (irq=POLL)
Nov 28 02:29:34 hlogw kernel: [190853.178668] mvneta d0030000.ethernet eth0: configuring for phy/rgmii-id link mode
Nov 28 01:29:34 hlogw netifd: Interface 'wan' is enabled

po ifup wan naskocil net, ale ne spojeni na vodafone router co nasloucha na 192.168.100.1 - mam na to statickou routu. VDF mdm je v bridge. Coz me netrapi, jen to poznamenavam.