Is spice-vdagent required for Wayland?












1















I noticed the following message in syslog:




Cannot access vdagent virtio channel
/dev/virtio-ports/com.redhat.spice.0




I am running Ubuntu 18.10 on Wayland, so could I delete spice-vdagent? And if I did what effect would that have if I decided to run Ubuntu 18.10 under Xorg?










share|improve this question























  • Are you running Ubuntu in a VM? Spice is one of a few protocols or technologies using which a virtual machine can communicate with its host to e.g. provide a shared clipboard or allow resizing the screen when you resize the host window. If you run Ubuntu on bare metal, you don't get anything useful from spice-vdagent.

    – Byte Commander
    Mar 16 at 22:41











  • Maybe of interest: bugs.launchpad.net/ubuntu/+source/spice-vdagent/+bug/1800196

    – DK Bose
    Mar 17 at 2:00











  • @ByteCommander It's not clear (to me) that spice-vdagent is for the client alone - it seems that it might be used on the host also, to provide host to client transfers of the clipboard and such.

    – Charles Green
    Mar 17 at 3:13











  • @Byte Commander. No, I am running Ubuntu 18.10 as the only OS on a new Corei7 laptop.

    – SteveInBavaria
    Mar 17 at 8:33











  • @CharlesGreen I disagree, what you need on the host is not the spice-vdagent but a spice-compatible client, like e.g. virt-viewer. I can not find any use for the agent outside a virtualized guest system.

    – Byte Commander
    Mar 17 at 13:54
















1















I noticed the following message in syslog:




Cannot access vdagent virtio channel
/dev/virtio-ports/com.redhat.spice.0




I am running Ubuntu 18.10 on Wayland, so could I delete spice-vdagent? And if I did what effect would that have if I decided to run Ubuntu 18.10 under Xorg?










share|improve this question























  • Are you running Ubuntu in a VM? Spice is one of a few protocols or technologies using which a virtual machine can communicate with its host to e.g. provide a shared clipboard or allow resizing the screen when you resize the host window. If you run Ubuntu on bare metal, you don't get anything useful from spice-vdagent.

    – Byte Commander
    Mar 16 at 22:41











  • Maybe of interest: bugs.launchpad.net/ubuntu/+source/spice-vdagent/+bug/1800196

    – DK Bose
    Mar 17 at 2:00











  • @ByteCommander It's not clear (to me) that spice-vdagent is for the client alone - it seems that it might be used on the host also, to provide host to client transfers of the clipboard and such.

    – Charles Green
    Mar 17 at 3:13











  • @Byte Commander. No, I am running Ubuntu 18.10 as the only OS on a new Corei7 laptop.

    – SteveInBavaria
    Mar 17 at 8:33











  • @CharlesGreen I disagree, what you need on the host is not the spice-vdagent but a spice-compatible client, like e.g. virt-viewer. I can not find any use for the agent outside a virtualized guest system.

    – Byte Commander
    Mar 17 at 13:54














1












1








1








I noticed the following message in syslog:




Cannot access vdagent virtio channel
/dev/virtio-ports/com.redhat.spice.0




I am running Ubuntu 18.10 on Wayland, so could I delete spice-vdagent? And if I did what effect would that have if I decided to run Ubuntu 18.10 under Xorg?










share|improve this question














I noticed the following message in syslog:




Cannot access vdagent virtio channel
/dev/virtio-ports/com.redhat.spice.0




I am running Ubuntu 18.10 on Wayland, so could I delete spice-vdagent? And if I did what effect would that have if I decided to run Ubuntu 18.10 under Xorg?







xorg wayland






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 16 at 21:45









SteveInBavariaSteveInBavaria

617419




617419













  • Are you running Ubuntu in a VM? Spice is one of a few protocols or technologies using which a virtual machine can communicate with its host to e.g. provide a shared clipboard or allow resizing the screen when you resize the host window. If you run Ubuntu on bare metal, you don't get anything useful from spice-vdagent.

    – Byte Commander
    Mar 16 at 22:41











  • Maybe of interest: bugs.launchpad.net/ubuntu/+source/spice-vdagent/+bug/1800196

    – DK Bose
    Mar 17 at 2:00











  • @ByteCommander It's not clear (to me) that spice-vdagent is for the client alone - it seems that it might be used on the host also, to provide host to client transfers of the clipboard and such.

    – Charles Green
    Mar 17 at 3:13











  • @Byte Commander. No, I am running Ubuntu 18.10 as the only OS on a new Corei7 laptop.

    – SteveInBavaria
    Mar 17 at 8:33











  • @CharlesGreen I disagree, what you need on the host is not the spice-vdagent but a spice-compatible client, like e.g. virt-viewer. I can not find any use for the agent outside a virtualized guest system.

    – Byte Commander
    Mar 17 at 13:54



















  • Are you running Ubuntu in a VM? Spice is one of a few protocols or technologies using which a virtual machine can communicate with its host to e.g. provide a shared clipboard or allow resizing the screen when you resize the host window. If you run Ubuntu on bare metal, you don't get anything useful from spice-vdagent.

    – Byte Commander
    Mar 16 at 22:41











  • Maybe of interest: bugs.launchpad.net/ubuntu/+source/spice-vdagent/+bug/1800196

    – DK Bose
    Mar 17 at 2:00











  • @ByteCommander It's not clear (to me) that spice-vdagent is for the client alone - it seems that it might be used on the host also, to provide host to client transfers of the clipboard and such.

    – Charles Green
    Mar 17 at 3:13











  • @Byte Commander. No, I am running Ubuntu 18.10 as the only OS on a new Corei7 laptop.

    – SteveInBavaria
    Mar 17 at 8:33











  • @CharlesGreen I disagree, what you need on the host is not the spice-vdagent but a spice-compatible client, like e.g. virt-viewer. I can not find any use for the agent outside a virtualized guest system.

    – Byte Commander
    Mar 17 at 13:54

















Are you running Ubuntu in a VM? Spice is one of a few protocols or technologies using which a virtual machine can communicate with its host to e.g. provide a shared clipboard or allow resizing the screen when you resize the host window. If you run Ubuntu on bare metal, you don't get anything useful from spice-vdagent.

– Byte Commander
Mar 16 at 22:41





Are you running Ubuntu in a VM? Spice is one of a few protocols or technologies using which a virtual machine can communicate with its host to e.g. provide a shared clipboard or allow resizing the screen when you resize the host window. If you run Ubuntu on bare metal, you don't get anything useful from spice-vdagent.

– Byte Commander
Mar 16 at 22:41













Maybe of interest: bugs.launchpad.net/ubuntu/+source/spice-vdagent/+bug/1800196

– DK Bose
Mar 17 at 2:00





Maybe of interest: bugs.launchpad.net/ubuntu/+source/spice-vdagent/+bug/1800196

– DK Bose
Mar 17 at 2:00













@ByteCommander It's not clear (to me) that spice-vdagent is for the client alone - it seems that it might be used on the host also, to provide host to client transfers of the clipboard and such.

– Charles Green
Mar 17 at 3:13





@ByteCommander It's not clear (to me) that spice-vdagent is for the client alone - it seems that it might be used on the host also, to provide host to client transfers of the clipboard and such.

– Charles Green
Mar 17 at 3:13













@Byte Commander. No, I am running Ubuntu 18.10 as the only OS on a new Corei7 laptop.

– SteveInBavaria
Mar 17 at 8:33





@Byte Commander. No, I am running Ubuntu 18.10 as the only OS on a new Corei7 laptop.

– SteveInBavaria
Mar 17 at 8:33













@CharlesGreen I disagree, what you need on the host is not the spice-vdagent but a spice-compatible client, like e.g. virt-viewer. I can not find any use for the agent outside a virtualized guest system.

– Byte Commander
Mar 17 at 13:54





@CharlesGreen I disagree, what you need on the host is not the spice-vdagent but a spice-compatible client, like e.g. virt-viewer. I can not find any use for the agent outside a virtualized guest system.

– Byte Commander
Mar 17 at 13:54










1 Answer
1






active

oldest

votes


















1














spice-vdagent is used only in virtualized guest systems to provide features like sharing the clipboard with the host/client or dynamically resizing the virtual screen together with the client window. It has no use on bare-metal installations.



The error you describe was:



Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0


This is only natural on a non-virtual system, because /dev/virtio-ports/com.redhat.spice.0 is a special device created by compatible hypervisors to provide a spice channel for communication between guest and host/client. It does not exist on hardware, therefore any spice-vdagent instance running on a bare-metal system can not find such a device.



You can safely uninstall this package from your system, as you don't need it because it is not a virtual machine:



sudo apt purge spice-vdagent


Edit: Actually, on at least 18.04 and newer (not yet on 16.04), ubuntu-desktop depends on spice-vdagent, so trying to remove that will also uninstall the ubuntu-desktop metapackage. This would not directly remove your desktop, but it's still not too advisable probably. I wonder why the devs decided to make this a mandatory dependency, but I am still convinced it has no use on a bare-metal installation.





From the package's description (extracts only; typos preserved as-is; full output can be obtained by running apt show spice-vdagent):



Package: spice-vdagent
Homepage: http://www.spice-space.org/
Description: Spice agent for Linux
spice-vdagent is the spice agent for Linux, it is used in conjunction with
spice-compitable hypervisor, its feature includs:
* Client mouse mode (no need to grab mouse by client, no mouse lag)
this is handled by the daemon by feeding mouse events into the kernel
via uinput. This will only work if the active X-session is running a
spice-vdagent process so that its resolution can be determined.
* Automatic adjustment of the X-session resolution to the client resolution
* Support of copy and paste (text and images) between the active X-session
and the client


Additional links:




  • General overview on the whole spice technology and architecture

  • Red Hat Virtualization Deployment and Administration Guide - Spice Agent section






share|improve this answer


























  • Would I need it if I needed to run Android or Windows emulation software or VMs?

    – SteveInBavaria
    Mar 17 at 14:43











  • Not on your host, no. It is only useful inside the virtual machines, if they support it.

    – Byte Commander
    Mar 17 at 15:44











  • Sorry, i don't quite understand. If I decide to run a VM (or emulation) on my native Ubuntu 18.10 OS, would I need spice-vdagent in order fot the VM to run?

    – SteveInBavaria
    Mar 17 at 16:09








  • 1





    No. Your Ubuntu host operating system, the one that is directly installed on physical hardware, never needs spice-vdagent installed. If you set up a virtual machine on your host, with another Linux system as guest, that guest system would profit from having spice-vdagent installed (on the guest system, still not on the host), but it would still run without the package. It just adds a few convenient features, as I described in the answer.

    – Byte Commander
    Mar 17 at 16:13






  • 1





    Unfortunately, I tried sudo apt purge spice-vdagent - I did not however, want to remove ubuntu-desktop and gnome-desktop....

    – Charles Green
    Mar 18 at 0:37











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1 Answer
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active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

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active

oldest

votes









1














spice-vdagent is used only in virtualized guest systems to provide features like sharing the clipboard with the host/client or dynamically resizing the virtual screen together with the client window. It has no use on bare-metal installations.



The error you describe was:



Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0


This is only natural on a non-virtual system, because /dev/virtio-ports/com.redhat.spice.0 is a special device created by compatible hypervisors to provide a spice channel for communication between guest and host/client. It does not exist on hardware, therefore any spice-vdagent instance running on a bare-metal system can not find such a device.



You can safely uninstall this package from your system, as you don't need it because it is not a virtual machine:



sudo apt purge spice-vdagent


Edit: Actually, on at least 18.04 and newer (not yet on 16.04), ubuntu-desktop depends on spice-vdagent, so trying to remove that will also uninstall the ubuntu-desktop metapackage. This would not directly remove your desktop, but it's still not too advisable probably. I wonder why the devs decided to make this a mandatory dependency, but I am still convinced it has no use on a bare-metal installation.





From the package's description (extracts only; typos preserved as-is; full output can be obtained by running apt show spice-vdagent):



Package: spice-vdagent
Homepage: http://www.spice-space.org/
Description: Spice agent for Linux
spice-vdagent is the spice agent for Linux, it is used in conjunction with
spice-compitable hypervisor, its feature includs:
* Client mouse mode (no need to grab mouse by client, no mouse lag)
this is handled by the daemon by feeding mouse events into the kernel
via uinput. This will only work if the active X-session is running a
spice-vdagent process so that its resolution can be determined.
* Automatic adjustment of the X-session resolution to the client resolution
* Support of copy and paste (text and images) between the active X-session
and the client


Additional links:




  • General overview on the whole spice technology and architecture

  • Red Hat Virtualization Deployment and Administration Guide - Spice Agent section






share|improve this answer


























  • Would I need it if I needed to run Android or Windows emulation software or VMs?

    – SteveInBavaria
    Mar 17 at 14:43











  • Not on your host, no. It is only useful inside the virtual machines, if they support it.

    – Byte Commander
    Mar 17 at 15:44











  • Sorry, i don't quite understand. If I decide to run a VM (or emulation) on my native Ubuntu 18.10 OS, would I need spice-vdagent in order fot the VM to run?

    – SteveInBavaria
    Mar 17 at 16:09








  • 1





    No. Your Ubuntu host operating system, the one that is directly installed on physical hardware, never needs spice-vdagent installed. If you set up a virtual machine on your host, with another Linux system as guest, that guest system would profit from having spice-vdagent installed (on the guest system, still not on the host), but it would still run without the package. It just adds a few convenient features, as I described in the answer.

    – Byte Commander
    Mar 17 at 16:13






  • 1





    Unfortunately, I tried sudo apt purge spice-vdagent - I did not however, want to remove ubuntu-desktop and gnome-desktop....

    – Charles Green
    Mar 18 at 0:37
















1














spice-vdagent is used only in virtualized guest systems to provide features like sharing the clipboard with the host/client or dynamically resizing the virtual screen together with the client window. It has no use on bare-metal installations.



The error you describe was:



Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0


This is only natural on a non-virtual system, because /dev/virtio-ports/com.redhat.spice.0 is a special device created by compatible hypervisors to provide a spice channel for communication between guest and host/client. It does not exist on hardware, therefore any spice-vdagent instance running on a bare-metal system can not find such a device.



You can safely uninstall this package from your system, as you don't need it because it is not a virtual machine:



sudo apt purge spice-vdagent


Edit: Actually, on at least 18.04 and newer (not yet on 16.04), ubuntu-desktop depends on spice-vdagent, so trying to remove that will also uninstall the ubuntu-desktop metapackage. This would not directly remove your desktop, but it's still not too advisable probably. I wonder why the devs decided to make this a mandatory dependency, but I am still convinced it has no use on a bare-metal installation.





From the package's description (extracts only; typos preserved as-is; full output can be obtained by running apt show spice-vdagent):



Package: spice-vdagent
Homepage: http://www.spice-space.org/
Description: Spice agent for Linux
spice-vdagent is the spice agent for Linux, it is used in conjunction with
spice-compitable hypervisor, its feature includs:
* Client mouse mode (no need to grab mouse by client, no mouse lag)
this is handled by the daemon by feeding mouse events into the kernel
via uinput. This will only work if the active X-session is running a
spice-vdagent process so that its resolution can be determined.
* Automatic adjustment of the X-session resolution to the client resolution
* Support of copy and paste (text and images) between the active X-session
and the client


Additional links:




  • General overview on the whole spice technology and architecture

  • Red Hat Virtualization Deployment and Administration Guide - Spice Agent section






share|improve this answer


























  • Would I need it if I needed to run Android or Windows emulation software or VMs?

    – SteveInBavaria
    Mar 17 at 14:43











  • Not on your host, no. It is only useful inside the virtual machines, if they support it.

    – Byte Commander
    Mar 17 at 15:44











  • Sorry, i don't quite understand. If I decide to run a VM (or emulation) on my native Ubuntu 18.10 OS, would I need spice-vdagent in order fot the VM to run?

    – SteveInBavaria
    Mar 17 at 16:09








  • 1





    No. Your Ubuntu host operating system, the one that is directly installed on physical hardware, never needs spice-vdagent installed. If you set up a virtual machine on your host, with another Linux system as guest, that guest system would profit from having spice-vdagent installed (on the guest system, still not on the host), but it would still run without the package. It just adds a few convenient features, as I described in the answer.

    – Byte Commander
    Mar 17 at 16:13






  • 1





    Unfortunately, I tried sudo apt purge spice-vdagent - I did not however, want to remove ubuntu-desktop and gnome-desktop....

    – Charles Green
    Mar 18 at 0:37














1












1








1







spice-vdagent is used only in virtualized guest systems to provide features like sharing the clipboard with the host/client or dynamically resizing the virtual screen together with the client window. It has no use on bare-metal installations.



The error you describe was:



Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0


This is only natural on a non-virtual system, because /dev/virtio-ports/com.redhat.spice.0 is a special device created by compatible hypervisors to provide a spice channel for communication between guest and host/client. It does not exist on hardware, therefore any spice-vdagent instance running on a bare-metal system can not find such a device.



You can safely uninstall this package from your system, as you don't need it because it is not a virtual machine:



sudo apt purge spice-vdagent


Edit: Actually, on at least 18.04 and newer (not yet on 16.04), ubuntu-desktop depends on spice-vdagent, so trying to remove that will also uninstall the ubuntu-desktop metapackage. This would not directly remove your desktop, but it's still not too advisable probably. I wonder why the devs decided to make this a mandatory dependency, but I am still convinced it has no use on a bare-metal installation.





From the package's description (extracts only; typos preserved as-is; full output can be obtained by running apt show spice-vdagent):



Package: spice-vdagent
Homepage: http://www.spice-space.org/
Description: Spice agent for Linux
spice-vdagent is the spice agent for Linux, it is used in conjunction with
spice-compitable hypervisor, its feature includs:
* Client mouse mode (no need to grab mouse by client, no mouse lag)
this is handled by the daemon by feeding mouse events into the kernel
via uinput. This will only work if the active X-session is running a
spice-vdagent process so that its resolution can be determined.
* Automatic adjustment of the X-session resolution to the client resolution
* Support of copy and paste (text and images) between the active X-session
and the client


Additional links:




  • General overview on the whole spice technology and architecture

  • Red Hat Virtualization Deployment and Administration Guide - Spice Agent section






share|improve this answer















spice-vdagent is used only in virtualized guest systems to provide features like sharing the clipboard with the host/client or dynamically resizing the virtual screen together with the client window. It has no use on bare-metal installations.



The error you describe was:



Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0


This is only natural on a non-virtual system, because /dev/virtio-ports/com.redhat.spice.0 is a special device created by compatible hypervisors to provide a spice channel for communication between guest and host/client. It does not exist on hardware, therefore any spice-vdagent instance running on a bare-metal system can not find such a device.



You can safely uninstall this package from your system, as you don't need it because it is not a virtual machine:



sudo apt purge spice-vdagent


Edit: Actually, on at least 18.04 and newer (not yet on 16.04), ubuntu-desktop depends on spice-vdagent, so trying to remove that will also uninstall the ubuntu-desktop metapackage. This would not directly remove your desktop, but it's still not too advisable probably. I wonder why the devs decided to make this a mandatory dependency, but I am still convinced it has no use on a bare-metal installation.





From the package's description (extracts only; typos preserved as-is; full output can be obtained by running apt show spice-vdagent):



Package: spice-vdagent
Homepage: http://www.spice-space.org/
Description: Spice agent for Linux
spice-vdagent is the spice agent for Linux, it is used in conjunction with
spice-compitable hypervisor, its feature includs:
* Client mouse mode (no need to grab mouse by client, no mouse lag)
this is handled by the daemon by feeding mouse events into the kernel
via uinput. This will only work if the active X-session is running a
spice-vdagent process so that its resolution can be determined.
* Automatic adjustment of the X-session resolution to the client resolution
* Support of copy and paste (text and images) between the active X-session
and the client


Additional links:




  • General overview on the whole spice technology and architecture

  • Red Hat Virtualization Deployment and Administration Guide - Spice Agent section







share|improve this answer














share|improve this answer



share|improve this answer








edited Mar 18 at 2:00

























answered Mar 17 at 14:10









Byte CommanderByte Commander

66.2k27181308




66.2k27181308













  • Would I need it if I needed to run Android or Windows emulation software or VMs?

    – SteveInBavaria
    Mar 17 at 14:43











  • Not on your host, no. It is only useful inside the virtual machines, if they support it.

    – Byte Commander
    Mar 17 at 15:44











  • Sorry, i don't quite understand. If I decide to run a VM (or emulation) on my native Ubuntu 18.10 OS, would I need spice-vdagent in order fot the VM to run?

    – SteveInBavaria
    Mar 17 at 16:09








  • 1





    No. Your Ubuntu host operating system, the one that is directly installed on physical hardware, never needs spice-vdagent installed. If you set up a virtual machine on your host, with another Linux system as guest, that guest system would profit from having spice-vdagent installed (on the guest system, still not on the host), but it would still run without the package. It just adds a few convenient features, as I described in the answer.

    – Byte Commander
    Mar 17 at 16:13






  • 1





    Unfortunately, I tried sudo apt purge spice-vdagent - I did not however, want to remove ubuntu-desktop and gnome-desktop....

    – Charles Green
    Mar 18 at 0:37



















  • Would I need it if I needed to run Android or Windows emulation software or VMs?

    – SteveInBavaria
    Mar 17 at 14:43











  • Not on your host, no. It is only useful inside the virtual machines, if they support it.

    – Byte Commander
    Mar 17 at 15:44











  • Sorry, i don't quite understand. If I decide to run a VM (or emulation) on my native Ubuntu 18.10 OS, would I need spice-vdagent in order fot the VM to run?

    – SteveInBavaria
    Mar 17 at 16:09








  • 1





    No. Your Ubuntu host operating system, the one that is directly installed on physical hardware, never needs spice-vdagent installed. If you set up a virtual machine on your host, with another Linux system as guest, that guest system would profit from having spice-vdagent installed (on the guest system, still not on the host), but it would still run without the package. It just adds a few convenient features, as I described in the answer.

    – Byte Commander
    Mar 17 at 16:13






  • 1





    Unfortunately, I tried sudo apt purge spice-vdagent - I did not however, want to remove ubuntu-desktop and gnome-desktop....

    – Charles Green
    Mar 18 at 0:37

















Would I need it if I needed to run Android or Windows emulation software or VMs?

– SteveInBavaria
Mar 17 at 14:43





Would I need it if I needed to run Android or Windows emulation software or VMs?

– SteveInBavaria
Mar 17 at 14:43













Not on your host, no. It is only useful inside the virtual machines, if they support it.

– Byte Commander
Mar 17 at 15:44





Not on your host, no. It is only useful inside the virtual machines, if they support it.

– Byte Commander
Mar 17 at 15:44













Sorry, i don't quite understand. If I decide to run a VM (or emulation) on my native Ubuntu 18.10 OS, would I need spice-vdagent in order fot the VM to run?

– SteveInBavaria
Mar 17 at 16:09







Sorry, i don't quite understand. If I decide to run a VM (or emulation) on my native Ubuntu 18.10 OS, would I need spice-vdagent in order fot the VM to run?

– SteveInBavaria
Mar 17 at 16:09






1




1





No. Your Ubuntu host operating system, the one that is directly installed on physical hardware, never needs spice-vdagent installed. If you set up a virtual machine on your host, with another Linux system as guest, that guest system would profit from having spice-vdagent installed (on the guest system, still not on the host), but it would still run without the package. It just adds a few convenient features, as I described in the answer.

– Byte Commander
Mar 17 at 16:13





No. Your Ubuntu host operating system, the one that is directly installed on physical hardware, never needs spice-vdagent installed. If you set up a virtual machine on your host, with another Linux system as guest, that guest system would profit from having spice-vdagent installed (on the guest system, still not on the host), but it would still run without the package. It just adds a few convenient features, as I described in the answer.

– Byte Commander
Mar 17 at 16:13




1




1





Unfortunately, I tried sudo apt purge spice-vdagent - I did not however, want to remove ubuntu-desktop and gnome-desktop....

– Charles Green
Mar 18 at 0:37





Unfortunately, I tried sudo apt purge spice-vdagent - I did not however, want to remove ubuntu-desktop and gnome-desktop....

– Charles Green
Mar 18 at 0:37


















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