Bug 974126 - virt-manager can't connect to VNC listening on IPv6 address [::]
virt-manager can't connect to VNC listening on IPv6 address [::]
Product: Virtualization Tools
Classification: Community
Component: virt-manager (Show other bugs)
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unspecified Severity low
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Assigned To: Cole Robinson
Depends On:
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Reported: 2013-06-13 09:27 EDT by Iain Patterson
Modified: 2014-01-29 11:05 EST (History)
3 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2014-01-29 11:05:26 EST
Type: Bug
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RHEL 7.3 requirements from Atomic Host:
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Description Iain Patterson 2013-06-13 09:27:41 EDT
Description of problem:
virt-manager fails to connect to a qemu-kvm guest's VNC display if the listen address is set to [::].  virt-viewer does connect.  virt-manager does connect successfully if the address is 

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Start libvirtd with vnc_listen="::" in /etc/libvirt/qemu.conf.
2. Connect virt-manager to qemu+tcp://hostname/system and create a guest with a VNC display.
3. Try to open the guest's display from virt-manager.

Actual results:
virt-manager fails to show the guest's display, instead producing the error message "viewer connection to hypervisor host got refused or disconnected"

Expected results:
virt-manager should show the guest's VNC display.

Additional info:
/usr/share/virt-manager/virtManager/console.py defines the function get_conn_host().  Within that function is a condition:

  if self.gaddr != "":

Changing the line to the following allows virt-manager to connect properly:

  if self.gaddr != "" and self.gaddr != "::":

The same python script contains the hardcoded address in various places.  I have not tested but they may also cause trouble with the IPv6 loopback address [::1].  I have also not tested configuring the VNC server to bind to a specific IPv6 address.
Comment 1 Cole Robinson 2014-01-29 11:03:59 EST
Thanks for the report, fixed upstream now

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