rpc: add network field to rpc getnodeaddresses

test/functional/rpc_net.py

@@ -195,7 +195,7 @@ class NetTest(BitcoinTestFramework):
         for i in range(10000):
             first_octet = i >> 8
             second_octet = i % 256
-            a = "{}.{}.1.1".format(first_octet, second_octet)
+            a = "{}.{}.1.1".format(first_octet, second_octet)  # IPV4
             imported_addrs.append(a)
             self.nodes[0].addpeeraddress(a, 8333)
 
@@ -212,6 +212,7 @@ class NetTest(BitcoinTestFramework):
             assert_equal(a["services"], NODE_NETWORK | NODE_WITNESS)
             assert a["address"] in imported_addrs
             assert_equal(a["port"], 8333)
+            assert_equal(a["network"], "ipv4")
 
         node_addresses = self.nodes[0].getnodeaddresses(1)
         assert_equal(len(node_addresses), 1)