ubuntu连接外网后，U盘挂载不生效，只产生、media下的文件名未挂载

Question

```c++

KERNEL!="sd[b-z][0-9]", GOTO="media_by_label_auto_mount_end"

IMPORT{program}="/sbin/blkid -o udev -p %N"

ENV{ID_FS_LABEL}!="", ENV{dir_name}="%E{ID_FS_LABEL}"
ENV{ID_FS_LABEL}=="", ENV{dir_name}="usbhd-%k"

ACTION=="add", ENV{mount_options}="relatime"

ACTION=="add", ENV{ID_FS_TYPE}=="vfat|ntfs|exfat", ENV{mount_options}="$env{mount_options},utf8,gid=100,umask=000"

ACTION=="add", RUN+="/bin/mkdir -p /media/%E{dir_name}", RUN+="/bin/mount -o $env{mount_options} /dev/%k /media/%E{dir_name}"

ACTION=="remove", ENV{dir_name}!="", RUN+="/bin/umount -l /media/%E{dir_name}", RUN+="/bin/rmdir /media/%E{dir_name}"
# Exit
LABEL="media_by_label_auto_mount_end"

```

Answer 1

连不上u盘跟联网应该没关系啊！/ dev目录下有相关的u盘设备和u盘分区吗？