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I'd like to find kernel module which is behind virtual network interface (e.g interfaces using veth, dummy kernel modules, NOT physical NIC). It's easy with ethtool:

$ ethtool -i ltp_ns_veth2 |grep driver
driver: veth

But I don't want to depend on it. I know I can find module for physical NIC:

$ basename $(readlink -f /sys/class/net/eth0/device/driver/module)
e1000

But this doesn't work for virtual devices as there is no link to device folder.

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You can use dmesg | grep eth if you know the interface name would contain eth.

[root@psybox ~]# dmesg | grep -i eth
[    2.009028] vmxnet3 0000:03:00.0 eth0: NIC Link is Up 10000 Mbps

The driver is displayed second, vmxnet3.

  • No, that's not correct for my case. dmesg tells you info about physical NIC (in that case is better to use info from sysfs, as I wrote in question). But dmesg does NOT tell you info about virtual NIC (NIC which use veth od dummy kernel module). – pevik Jul 26 '17 at 16:48

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