Hier die komplette fstab. Ich war so frei beim Ionos-Mount meinen Usernamen durch [username] zu ersetzen.
Wie gesagt, ich habe sie in der letzten Zeit nicht geändert.
Betroffen sind die beiden Mountpunkte /media/user00/webde und /media/user00/ionos.
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sda2 during curtin installation
/dev/disk/by-uuid/7aa5570c-0fb3-468a-8dac-6d2cb2379e4c / ext4 defaults 0 1
# /boot/efi was on /dev/sda1 during curtin installation
/dev/disk/by-uuid/7634-4FE6 /boot/efi vfat defaults 0 1
/swap.img none swap sw 0 0
# Ab hier editiert / eigene Einträge
#https://webdav.hidrive.ionos.com/users/nfoto /media/user00/ionos_alt davfs _netdev,users,uid=1000,gid=1000,rw,async,exec,suid,x-systemd.automount,x-systemd.device-timeout=10 0 0
#https://webdav.hidrive.ionos.com/users/[username] /media/user00/ionos_neu davfs _netdev,users,uid=1000,gid=1000,rw,async,exec,suid,x-systemd.automount,x-systemd.device-timeout=10 0 0
https://webdav.smartdrive.web.de /media/user00/webde davfs _netdev,users,uid=1000,gid=1000,rw,async,exec,suid,x-systemd.automount,x-systemd.device-timeout=10 0 0
https://webdav.hidrive.ionos.com/users/[username] /media/user00/ionos davfs _netdev,users,uid=1000,gid=1000,rw,async,exec,suid,x-systemd.automount,x-systemd.device-timeout=10 0 0
LABEL=daten /media/daten auto nosuid,nodev,nofail,x-gvfs-show 0 0
/dev/disk/by-id/usb-Seagate_Portable_NACMDLQ5-0:0-part2 /media/user00/Namibia auto nosuid,nodev,nofail,noauto,x-gvfs-show 0 0