diff --git a/gbpclient/gbp/v2_0/network.py b/gbpclient/gbp/v2_0/network.py
index 2a3c45c..89d8986 100644
--- a/gbpclient/gbp/v2_0/network.py
+++ b/gbpclient/gbp/v2_0/network.py
@@ -93,6 +93,9 @@ def _get_attrs_network_extension(client_manager, parsed_args):
     if ('no_apic_no_nat_cidrs' in parsed_args and
         parsed_args.no_apic_no_nat_cidrs):
         attrs['apic:no_nat_cidrs'] = []
+    if ('apic_multi_ext_nets' in parsed_args and
+            parsed_args.apic_multi_ext_nets):
+        attrs['apic:multi_ext_nets'] = parsed_args.apic_multi_ext_nets
     if parsed_args.external:
         if ('apic_nat_type' in parsed_args and
             parsed_args.apic_nat_type is not None):
@@ -139,6 +142,7 @@ network_sdk.Network.apic_policy_enforcement_pref = resource.Body(
 network_sdk.Network.apic_nat_type = resource.Body('apic:nat_type')
 network_sdk.Network.apic_external_cidrs = resource.Body('apic:external_cidrs')
 network_sdk.Network.apic_no_nat_cidrs = resource.Body('apic:no_nat_cidrs')
+network_sdk.Network.apic_multi_ext_nets = resource.Body('apic:multi_ext_nets')
 
 
 class CreateNetworkExtension(hooks.CommandHook):
@@ -315,6 +319,15 @@ class CreateNetworkExtension(hooks.CommandHook):
                    "Syntax Example: 10.10.10.0/24 "
                    "or 10.10.10.0/24,20.20.20.0/24 ")
         )
+        parser.add_argument(
+            '--apic-multi-ext-nets',
+            action='store_true',
+            default=None,
+            dest='apic_multi_ext_nets',
+            help=_("Makes it possible to associate multi external networks "
+                   "with a single L3Outside\n"
+                   "Default value is False ")
+        )
         return parser
 
     def get_epilog(self):
diff --git a/gbpclient/tests/unit/test_network.py b/gbpclient/tests/unit/test_network.py
index 803371d..c93309f 100644
--- a/gbpclient/tests/unit/test_network.py
+++ b/gbpclient/tests/unit/test_network.py
@@ -55,6 +55,7 @@ class TestNetworkCreate(test_network.TestNetwork, test_cli20.CLITestV20Base):
             ('apic_extra_consumed_contracts', None),
             ('apic_policy_enforcement_pref', None),
             ('apic_no_nat_cidrs', None),
+            ('apic_multi_ext_nets', None),
         ]
         create_ext = network_ext.CreateNetworkExtension(self.app)
         parsed_args = self.check_parser_ext(
@@ -88,6 +89,7 @@ class TestNetworkCreate(test_network.TestNetwork, test_cli20.CLITestV20Base):
             "--apic-extra-consumed-contracts", 'contest1',
             "--apic-policy-enforcement-pref", 'enforced',
             "--apic-no-nat-cidrs", '10.10.10.0/24',
+            "--apic-multi-ext-nets",
         ]
         verifylist = [
             ('name', self._network.name),
@@ -109,6 +111,7 @@ class TestNetworkCreate(test_network.TestNetwork, test_cli20.CLITestV20Base):
             ('apic_extra_consumed_contracts', 'contest1'),
             ('apic_policy_enforcement_pref', 'enforced'),
             ('apic_no_nat_cidrs', '10.10.10.0/24'),
+            ('apic_multi_ext_nets', True)
         ]
         create_ext = network_ext.CreateNetworkExtension(self.app)
         parsed_args = self.check_parser_ext(
@@ -137,6 +140,7 @@ class TestNetworkCreate(test_network.TestNetwork, test_cli20.CLITestV20Base):
             'apic:nested_domain_service_vlan': '3',
             'apic:policy_enforcement_pref': 'enforced',
             'apic:no_nat_cidrs': ['10.10.10.0/24'],
+            'apic:multi_ext_nets': True,
         })
 
     def test_create_empty_contracts(self):