diff --git a/lib/facter/util/resolvers/networking/primary_interface.rb b/lib/facter/util/resolvers/networking/primary_interface.rb
index 56d0c49377..a20a6462b7 100644
--- a/lib/facter/util/resolvers/networking/primary_interface.rb
+++ b/lib/facter/util/resolvers/networking/primary_interface.rb
@@ -57,6 +57,8 @@ def read_from_ip_route
             end
 
             def find_in_interfaces(interfaces)
+              return if interfaces.nil?
+
               interfaces.each do |iface_name, interface|
                 interface[:bindings]&.each do |binding|
                   return iface_name unless Facter::Util::Resolvers::Networking.ignored_ip_address(binding[:address])