separated out ip ban logic from regular bans, users can no longer register if an ip ban is in place

db/migrate/20100318213503_create_ip_bans.rb

@@ -0,0 +1,16 @@
+class CreateIpBans < ActiveRecord::Migration
+  def self.up
+    create_table :ip_bans do |t|
+      t.column :creator_id, :integer, :null => false
+      t.column :ip_addr, :inet, :null => false
+      t.column :reason, :text, :null => false
+      t.timestamps
+    end
+    
+    add_index :ip_bans, :ip_addr, :unique => true
+  end
+
+  def self.down
+    drop_table :ip_bans
+  end
+end