I haven't used my NIC for some time, and now it doesn't work anymore, at all. I can assign IP addresses to it manually (sudo ip addr add 192.168.2.155/24 broadcast 192.168.2.255 dev eth0, for example), but I cannot even ping hosts in the same network.Very suspicious in my eyes is that ethtool (ethtool -S eth0) displays some transmitted packets, but always exactly zero received bytes & packets. Something is clearly wrong.Here is a list of the things I triedrebootingtried other cabletried other port (this laptop has one port on it's docking station and one on the laptop itself ; they're internally connected to the same NIC)tried other switch (switch A: 8 port GbE, switch B: 5 port 100 MbE)Downgraded kernel and linux-firmware to older versions (3.13 and mid-2013 respectively)booted latest arch linux live medium ; didn't work, same symptomsbooted Ubuntu 14.04.1 live medium ; didn't work, same symptomsIn every setup mentioned above I tried accessing the network by manually assigning an IP address, by using wicd. In the start I also tried NetworkManager, same resultsAt this point I suspect the NIC may be broken, if so, how could I validate this or rule it out?This is the NIC in question (Thinkpad X200):    00:19.0 Ethernet controller: Intel Corporation 82567LM Gigabit Network Connection (rev 03)            Subsystem: Lenovo Device 20ee            Flags: bus master, fast devsel, latency 0, IRQ 44            Memory at f2600000 (32-bit, non-prefetchable) [size=128K]            Memory at f2625000 (32-bit, non-prefetchable) [size=4K]            I/O ports at 1840 [size=32]            Capabilities: [c8] Power Management version 2            Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+            Capabilities: [e0] PCI Advanced Features            Kernel driver in use: e1000e            Kernel modules: e1000eethtool -S eth0: NIC statistics:      rx_packets: 0      tx_packets: 90      rx_bytes: 0      tx_bytes: 8113      rx_broadcast: 0      tx_broadcast: 70      rx_multicast: 0      tx_multicast: 20      rx_errors: 0      tx_errors: 0      tx_dropped: 0      multicast: 0      collisions: 0      rx_length_errors: 0      rx_over_errors: 0      rx_crc_errors: 0      rx_frame_errors: 0      rx_no_buffer_count: 0      rx_missed_errors: 0      tx_aborted_errors: 0      tx_carrier_errors: 0      tx_fifo_errors: 0      tx_heartbeat_errors: 0      tx_window_errors: 0      tx_abort_late_coll: 0      tx_deferred_ok: 0      tx_single_coll_ok: 0      tx_multi_coll_ok: 0      tx_timeout_count: 0      tx_restart_queue: 0      rx_long_length_errors: 0      rx_short_length_errors: 0      rx_align_errors: 0      tx_tcp_seg_good: 0      tx_tcp_seg_failed: 0      rx_flow_control_xon: 0      rx_flow_control_xoff: 0      tx_flow_control_xon: 0      tx_flow_control_xoff: 0      rx_csum_offload_good: 0      rx_csum_offload_errors: 0      rx_header_split: 0      alloc_rx_buff_failed: 0      tx_smbus: 0      rx_smbus: 0      dropped_smbus: 0      rx_dma_failed: 0      tx_dma_failed: 0      rx_hwtstamp_cleared: 0      uncorr_ecc_errors: 0      corr_ecc_errors: 0Using tcpdump -i eth0 I don't see any traffic at all.
Ethernet does not work at all
networking;arch linux