Fix get_interfaces_ip for non ipv6 devices

napalm/ios/ios.py

@@ -1137,24 +1137,25 @@ def get_interfaces_ip(self):
                 ipv4.update({ip: {"prefix_length": int(prefix)}})
                 interfaces[interface_name] = {'ipv4': ipv4}
 
-        for line in show_ipv6_interface.splitlines():
-            if(len(line.strip()) == 0):
-                continue
-            if(line[0] != ' '):
-                ifname = line.split()[0]
-                ipv6 = {}
-                if ifname not in interfaces:
-                    interfaces[ifname] = {'ipv6': ipv6}
-                else:
-                    interfaces[ifname].update({'ipv6': ipv6})
-            m = re.match(LINK_LOCAL_ADDRESS, line)
-            if m:
-                ip = m.group(1)
-                ipv6.update({ip: {"prefix_length": 10}})
-            m = re.match(GLOBAL_ADDRESS, line)
-            if m:
-                ip, prefix = m.groups()
-                ipv6.update({ip: {"prefix_length": int(prefix)}})
+        if '% Invalid input detected at' not in show_ipv6_interface:
+            for line in show_ipv6_interface.splitlines():
+                if(len(line.strip()) == 0):
+                    continue
+                if(line[0] != ' '):
+                    ifname = line.split()[0]
+                    ipv6 = {}
+                    if ifname not in interfaces:
+                        interfaces[ifname] = {'ipv6': ipv6}
+                    else:
+                        interfaces[ifname].update({'ipv6': ipv6})
+                m = re.match(LINK_LOCAL_ADDRESS, line)
+                if m:
+                    ip = m.group(1)
+                    ipv6.update({ip: {"prefix_length": 10}})
+                m = re.match(GLOBAL_ADDRESS, line)
+                if m:
+                    ip, prefix = m.groups()
+                    ipv6.update({ip: {"prefix_length": int(prefix)}})
 
         # Interface without ipv6 doesn't appears in show ipv6 interface
         return interfaces

test/ios/mocked_data/test_get_interfaces_ip/no_ipv6_support/expected_result.json

@@ -0,0 +1,19 @@
+{
+	"Vlan20": {
+		"ipv4": {
+			"172.29.50.3": {
+				"prefix_length": 27
+			}
+		}
+	},
+	"Vlan41": {
+		"ipv4": {
+			"172.29.52.34": {
+				"prefix_length": 27
+			},
+			"192.168.81.34": {
+				"prefix_length": 24
+			}
+		}
+	}
+}

test/ios/mocked_data/test_get_interfaces_ip/no_ipv6_support/show_ip_interface.txt

@@ -0,0 +1,87 @@
+Vlan20 is up, line protocol is up
+  Internet address is 172.29.50.3/27
+  Broadcast address is 255.255.255.255
+  Address determined by non-volatile memory
+  MTU is 1500 bytes
+  Helper addresses are 172.16.0.1
+                       192.168.1.1
+  Directed broadcast forwarding is enabled
+  Multicast reserved groups joined: 224.0.0.102 224.0.0.5 224.0.0.6
+  Outgoing access list is not set
+  Inbound  access list is not set
+  Proxy ARP is disabled
+  Local Proxy ARP is disabled
+  Security level is default
+  Split horizon is enabled
+  ICMP redirects are never sent
+  ICMP unreachables are never sent
+  ICMP mask replies are never sent
+  IP fast switching is enabled
+  IP Flow switching is disabled
+  IP CEF switching is enabled
+  IP CEF switching turbo vector
+  IP Null turbo vector
+  Associated unicast routing topologies:
+        Topology "base", operation state is UP
+  IP multicast fast switching is enabled
+  IP multicast distributed fast switching is disabled
+  IP route-cache flags are Fast, CEF
+  Router Discovery is disabled
+  IP output packet accounting is disabled
+  IP access violation accounting is disabled
+  TCP/IP header compression is disabled
+  RTP/IP header compression is disabled
+  Probe proxy name replies are disabled
+  Policy routing is disabled
+  Network address translation is disabled
+  BGP Policy Mapping is disabled
+  Input features: MCI Check
+  Output features: IP Post Routing Processing, HW Shortcut Installation
+  Post encapsulation features: MTU Processing, IP Protocol Output Counter, IP Sendself Check, HW Shortcut Installation
+  Sampled Netflow is disabled
+  IP Routed Flow creation is disabled in netflow table
+  IP Bridged Flow creation is disabled in netflow table
+  IPv4 WCCP Redirect outbound is disabled
+  IPv4 WCCP Redirect inbound is disabled
+  IPv4 WCCP Redirect exclude is disabled
+  IP multicast multilayer switching is disabled
+GigabitEthernet1/1 is down, line protocol is down
+GigabitEthernet1/2 is down, line protocol is down
+GigabitEthernet1/3 is administratively down, line protocol is down
+  Internet protocol processing disabled
+Vlan41 is up, line protocol is up
+  Internet address is 172.29.52.34/27
+  Broadcast address is 255.255.255.255
+  Address determined by non-volatile memory
+  MTU is 1514 bytes
+  Helper address is not set
+  Directed broadcast forwarding is disabled
+  Secondary address 192.168.81.34/24
+  Outgoing access list is not set
+  Inbound  access list is not set
+  Proxy ARP is enabled
+  Local Proxy ARP is disabled
+  Security level is default
+  Split horizon is enabled
+  ICMP redirects are always sent
+  ICMP unreachables are always sent
+  ICMP mask replies are never sent
+  IP fast switching is enabled
+  IP fast switching on the same interface is disabled
+  IP Flow switching is disabled
+  IP CEF switching is enabled
+  IP CEF Fast switching turbo vector
+  IP multicast fast switching is enabled
+  IP multicast distributed fast switching is disabled
+  IP route-cache flags are Fast, CEF
+  Router Discovery is disabled
+  IP output packet accounting is disabled
+  IP access violation accounting is disabled
+  TCP/IP header compression is disabled
+  RTP/IP header compression is disabled
+  Policy routing is disabled
+  Network address translation is disabled
+  BGP Policy Mapping is disabled
+  WCCP Redirect outbound is disabled
+  WCCP Redirect inbound is disabled
+  WCCP Redirect exclude is disabled

test/ios/mocked_data/test_get_interfaces_ip/no_ipv6_support/show_ipv6_interface.txt

@@ -0,0 +1,2 @@
+                      ^
+% Invalid input detected at '^' marker.