[CentOS] tg3 network link unstable

Full updated EL6: Does someone have the same behaviour, unstable eth interface (tg3/no dhcp)?

Jan 19 18:01:46 ane kernel: tg3 0000:04:00.0: eth0: Link is up at 1000 Mbps, full duplex
Jan 19 18:01:46 ane kernel: tg3 0000:04:00.0: eth0: Flow control is on for TX and on for RX
Jan 19 18:01:46 ane kernel: tg3 0000:04:00.0: eth0: EEE is enabled
Jan 19 18:01:46 ane NetworkManager[1735]: <info> (eth0): carrier now ON (device state 8)
Jan 19 18:02:17 ane kernel: tg3 0000:04:00.0: eth0: Link is down
Jan 19 18:02:17 ane NetworkManager[1735]: <info> (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Jan 19 18:02:20 ane kernel: tg3 0000:04:00.0: eth0: Link is up at 1000 Mbps, full duplex
Jan 19 18:02:20 ane kernel: tg3 0000:04:00.0: eth0: Flow control is on for TX and on for RX
Jan 19 18:02:20 ane kernel: tg3 0000:04:00.0: eth0: EEE is enabled
Jan 19 18:02:20 ane NetworkManager[1735]: <info> (eth0): carrier now ON (device state 8)
Jan 19 18:02:23 ane kernel: tg3 0000:04:00.0: eth0: Link is down
Jan 19 18:02:23 ane NetworkManager[1735]: <info> (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Jan 19 18:02:26 ane kernel: tg3 0000:04:00.0: eth0: Link is up at 1000 Mbps, full duplex
Jan 19 18:02:26 ane kernel: tg3 0000:04:00.0: eth0: Flow control is on for TX and on for RX
Jan 19 18:02:26 ane kernel: tg3 0000:04:00.0: eth0: EEE is enabled
Jan 19 18:02:26 ane NetworkManager[1735]: <info> (eth0): carrier now ON (device state 8)
Jan 19 18:02:50 ane kernel: tg3 0000:04:00.0: eth0: Link is down
Jan 19 18:02:50 ane NetworkManager[1735]: <info> (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Jan 19 18:02:53 ane kernel: tg3 0000:04:00.0: eth0: Link is up at 1000 Mbps, full duplex
Jan 19 18:02:53 ane kernel: tg3 0000:04:00.0: eth0: Flow control is on for TX and on for RX
Jan 19 18:02:53 ane kernel: tg3 0000:04:00.0: eth0: EEE is enabled
Jan 19 18:02:53 ane NetworkManager[1735]: <info> (eth0): carrier now ON (device state 8)
Jan 19 18:03:11 ane kernel: tg3 0000:04:00.0: eth0: Link is down
Jan 19 18:03:11 ane NetworkManager[1735]: <info> (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Jan 19 18:03:14 ane kernel: tg3 0000:04:00.0: eth0: Link is up at 1000 Mbps, full duplex
Jan 19 18:03:14 ane kernel: tg3 0000:04:00.0: eth0: Flow control is on for TX and on for RX
Jan 19 18:03:14 ane kernel: tg3 0000:04:00.0: eth0: EEE is enabled
Jan 19 18:03:14 ane NetworkManager[1735]: <info> (eth0): carrier now ON (device state 8)