systemd/udev-kernel.socket

   1 [Unit]
   2 Description=udev Kernel Socket
   3 DefaultDependencies=no
   4 ConditionCapability=CAP_MKNOD
   5
   6 [Socket]
   7 Service=udev.service
   8 ReceiveBuffer=134217728
   9 ListenNetlink=kobject-uevent 1
  10 PassCred=yes