ipdb: introduce ipaddr views

Views::
    ipdb.interfaces.eth0.ipaddr
    ipdb.interfaces.eth0.ipaddr.ipv4
    ipdb.interfaces.eth0.ipaddr.ipv6

Bug-Url: #302

pyroute2/ipdb/linkedset.py

@@ -153,7 +153,7 @@ def disconnect(self, link):
         self.links.remove(link)
 
     def __repr__(self):
-        return repr(list(self))
+        return repr(tuple(self))
 
 
 class IPaddrSet(LinkedSet):
@@ -166,6 +166,22 @@ class IPaddrSet(LinkedSet):
     IPv6 addresses, but it may be changed with the `ignore_link_local`
     argument.
     '''
+    @property
+    def ipv4(self):
+        ret = IPaddrSet()
+        for x in self:
+            if self[x]['family'] == AF_INET:
+                ret.add(x, self[x])
+        return ret
+
+    @property
+    def ipv6(self):
+        ret = IPaddrSet()
+        for x in self:
+            if self[x]['family'] == AF_INET6:
+                ret.add(x, self[x])
+        return ret
+
     def wait_ip(self, net, mask=None, timeout=None, ignore_link_local=False):
         family = AF_INET6 if net.find(':') >= 0 else AF_INET
         alen = 32 if family == AF_INET else 128
@@ -204,9 +220,6 @@ def match_ip(ipset):
         self.clear_target(target)
         return ret
 
-    def __repr__(self):
-        return repr(['%s/%s' % x for x in self])
-
     def __getitem__(self, key):
         if isinstance(key, (tuple, list)):
             return self.raw[key]

tests/general/test_ipdb.py

@@ -1466,6 +1466,19 @@ def test_snapshots(self):
         assert ('172.16.0.1', 24) in self.ip.interfaces[self.ifd].ipaddr
         assert self.ip.interfaces[self.ifd].flags & 1
 
+    def test_ipaddr_views(self):
+        require_user('root')
+
+        ifA = self.get_ifname()
+        i = (self.ip
+             .create(kind='dummy', ifname=ifA)
+             .add_ip('172.16.0.1/24')
+             .add_ip('fdb3:84e5:4ff4:55e4::1/64')
+             .commit())
+
+        assert len(i.ipaddr.ipv4) + len(i.ipaddr.ipv6) == len(i.ipaddr)
+        assert len(i.ipaddr) >= 2
+
     @skip_if_not_supported
     def _test_ipv(self, ipv, kind):
         require_user('root')