All models now Equatable

Signed-off-by: Eric Kuck <eric@bluelinelabs.com>

WireGuard/Shared/Model/InterfaceConfiguration.swift

@@ -2,6 +2,7 @@
 // Copyright © 2018 WireGuard LLC. All Rights Reserved.
 
 import Foundation
+import Network
 
 struct InterfaceConfiguration {
     var privateKey: Data
@@ -17,3 +18,16 @@ struct InterfaceConfiguration {
         self.privateKey = privateKey
     }
 }
+
+extension InterfaceConfiguration: Equatable {
+    static func == (lhs: InterfaceConfiguration, rhs: InterfaceConfiguration) -> Bool {
+        let lhsAddresses = lhs.addresses.filter { $0.address is IPv4Address } + lhs.addresses.filter { $0.address is IPv6Address }
+        let rhsAddresses = rhs.addresses.filter { $0.address is IPv4Address } + rhs.addresses.filter { $0.address is IPv6Address }
+
+        return lhs.privateKey == rhs.privateKey &&
+            lhsAddresses == rhsAddresses &&
+            lhs.listenPort == rhs.listenPort &&
+            lhs.mtu == rhs.mtu &&
+            lhs.dns == rhs.dns
+    }
+}