diff --git a/CHANGELOG.md b/CHANGELOG.md
index c677eeef1..9967a3bd0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -101,6 +101,7 @@ BUG FIXES:
   - guests/suse: DHCP network interfaces properly configured [GH-6502]
   - hosts/slackware: Better detection of NFS [GH-6367]
   - providers/hyper-v: support generation 2 VMs [GH-6372]
+  - providers/virtualbox: ignore "Unknown" status bridge interfaces [GH-6061]
   - provisioners/ansible: use quotes for the `ansible_ssh_private_key_file`
     value in the generated inventory [GH-6209]
   - provisioners/ansible: don't show the `ansible-playbook` command when verbose
diff --git a/plugins/providers/virtualbox/action/network.rb b/plugins/providers/virtualbox/action/network.rb
index a09494219..be15c1c47 100644
--- a/plugins/providers/virtualbox/action/network.rb
+++ b/plugins/providers/virtualbox/action/network.rb
@@ -148,7 +148,7 @@ module VagrantPlugins
         def bridged_adapter(config)
           # Find the bridged interfaces that are available
           bridgedifs = @env[:machine].provider.driver.read_bridged_interfaces
-          bridgedifs.delete_if { |interface| interface[:status] == "Down" }
+          bridgedifs.delete_if { |interface| interface[:status] == "Down" || interface[:status] == "Unknown" }
 
           # The name of the chosen bridge interface will be assigned to this
           # variable.