Команды MS останавливают весь графический интерфейс :GpuWatchdog segfault

Это правило и скрипт udev перехватывают изменения сетевого интерфейса:

/etc/udev/rules.d/90-netifchanges.rules:

# Call custom script when ethernet device(s) are changed/added/removed/etc in system
SUBSYSTEM=="net" \
, RUN+="/usr/bin/systemd-cat /usr/local/bin/netifchanges.sh '$env{ACTION}' '$name' '$id' '$sys$devpath'"

/usr/local/bin/netifchanges.shскрипт, который ведет журнал systemd:

#!/bin/bash -e

action=$1
ifname=$2
id=$3
syspath=$4

echo "Network interface $ifname ($id) $action"
printenv

Можно протестировать без перезагрузки с помощью:

udevadm control --reload-rules && udevadm -d trigger -v --type devices --subsystem-match net

, а затем просмотреть журнал с помощью journalctl -xe.

Если вы не используете systemd:

Удалить /usr/bin/systemd-catв RUN+=".."Замените echoна logger "..."или echo "stuff" > /dev/kmsgили другим методом, используемым вашим дистрибутивом

Дополнительно вы можете видеть события журнала с добавлением фиктивного интерфейса:

# ip link add dummy0 type dummy
# ip link set dummy0 up
# ip link set dummy0 down
# ip link delete dummy0

Также вы можете найти много информации об интерфейсе с udevadm, например:

# udevadm info -a /sys/class/net/eno1

Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.

  looking at device '/devices/pci0000:00/0000:00:19.0/net/eno1':
    KERNEL=="eno1"
    SUBSYSTEM=="net"
    DRIVER==""
    ATTR{gro_flush_timeout}=="0"
    ATTR{proto_down}=="0"
    ATTR{addr_assign_type}=="0"
    ATTR{flags}=="0x1103"
    ATTR{netdev_group}=="0"
    ATTR{name_assign_type}=="4"
    ATTR{broadcast}=="ff:ff:ff:ff:ff:ff"
    ATTR{operstate}=="up"
    ATTR{link_mode}=="0"
    ATTR{dev_port}=="0"
    ATTR{address}=="74:d0:2b:2c:6e:d7"
    ATTR{duplex}=="full"
    ATTR{carrier_changes}=="4"
    ATTR{type}=="1"
    ATTR{addr_len}=="6"
    ATTR{dev_id}=="0x0"
    ATTR{iflink}=="3"
    ATTR{mtu}=="1500"
    ATTR{speed}=="1000"
    ATTR{carrier_down_count}=="2"
    ATTR{ifalias}==""
    ATTR{carrier_up_count}=="2"
    ATTR{ifindex}=="3"
    ATTR{carrier}=="1"
    ATTR{tx_queue_len}=="1000"
    ATTR{dormant}=="0"

  looking at parent device '/devices/pci0000:00/0000:00:19.0':
    KERNELS=="0000:00:19.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="e1000e"
    ATTRS{device}=="0x1503"
    ATTRS{label}==" Onboard LAN"
    ATTRS{enable}=="1"
    ATTRS{irq}=="56"
    ATTRS{subsystem_vendor}=="0x1043"
    ATTRS{devspec}==""
    ATTRS{revision}=="0x06"
    ATTRS{subsystem_device}=="0x849c"
    ATTRS{local_cpus}=="ff"
    ATTRS{local_cpulist}=="0-7"
    ATTRS{class}=="0x020000"
    ATTRS{driver_override}=="(null)"
    ATTRS{broken_parity_status}=="0"
    ATTRS{msi_bus}=="1"
    ATTRS{vendor}=="0x8086"
    ATTRS{consistent_dma_mask_bits}=="64"
    ATTRS{ari_enabled}=="0"
    ATTRS{index}=="1"
    ATTRS{numa_node}=="-1"
    ATTRS{d3cold_allowed}=="1"
    ATTRS{dma_mask_bits}=="64"

  looking at parent device '/devices/pci0000:00':
    KERNELS=="pci0000:00"
    SUBSYSTEMS==""
    DRIVERS==""

Эти ссылки на системные файлы:

# cat /sys/class/net/eno1/operstate 
up

udevadm monitorтакже можно использовать:

# udevadm -d monitor -p -k -u --subsystem-match=net
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

KERNEL[99386.755966] add      /devices/virtual/net/dummy0 (net)
ACTION=add
DEVPATH=/devices/virtual/net/dummy0
SUBSYSTEM=net
INTERFACE=dummy0
IFINDEX=12
SEQNUM=6842

rx-0: sd-device-monitor: Received device does not pass filter, ignoring
tx-0: sd-device-monitor: Received device does not pass filter, ignoring
UDEV  [99386.773912] add      /devices/virtual/net/dummy0 (net)
ACTION=add
DEVPATH=/devices/virtual/net/dummy0
SUBSYSTEM=net
INTERFACE=dummy0
IFINDEX=12
SEQNUM=6842
USEC_INITIALIZED=99386759873
ID_NET_NAMING_SCHEME=v240
ID_MM_CANDIDATE=1
ID_NET_DRIVER=dummy
ID_NET_LINK_FILE=/usr/lib/systemd/network/99-default.link
SYSTEMD_ALIAS=/sys/subsystem/net/devices/dummy0
TAGS=:systemd:

rx-0: sd-device-monitor: Received device does not pass filter, ignoring
tx-0: sd-device-monitor: Received device does not pass filter, ignoring
KERNEL[99392.704357] remove   /devices/virtual/net/dummy0 (net)
ACTION=remove
DEVPATH=/devices/virtual/net/dummy0
SUBSYSTEM=net
INTERFACE=dummy0
IFINDEX=12
SEQNUM=6847

UDEV  [99392.715832] remove   /devices/virtual/net/dummy0 (net)
ACTION=remove
DEVPATH=/devices/virtual/net/dummy0
SUBSYSTEM=net
INTERFACE=dummy0
IFINDEX=12
SEQNUM=6847
USEC_INITIALIZED=99386759873
ID_NET_NAMING_SCHEME=v240
ID_MM_CANDIDATE=1
ID_NET_DRIVER=dummy
ID_NET_LINK_FILE=/usr/lib/systemd/network/99-default.link
SYSTEMD_ALIAS=/sys/subsystem/net/devices/dummy0
TAGS=:systemd: