lib/vagrant/util/network_ip.rb in vagrant-unbundled-2.2.9.0 vs lib/vagrant/util/network_ip.rb in vagrant-unbundled-2.2.10.0

@@ -1,14 +1,24 @@
 require "ipaddr"
 
 module Vagrant
   module Util
     module NetworkIP
+
+      DEFAULT_MASK = "255.255.255.0".freeze
+
+      LOGGER = Log4r::Logger.new("vagrant::util::NetworkIP")
+
       # Returns the network address of the given IP and subnet.
       #
       # @return [String]
       def network_address(ip, subnet)
-        IPAddr.new(ip).mask(subnet).to_s
+        begin
+          IPAddr.new(ip).mask(subnet).to_s
+        rescue IPAddr::InvalidPrefixError
+          LOGGER.warn("Provided mask '#{subnet}' is invalid. Falling back to using mask '#{DEFAULT_MASK}'")
+          IPAddr.new(ip).mask(DEFAULT_MASK).to_s
+        end
       end
     end
   end
 end