[PATCH-next] lnst.Common: edit IpAddress - LNST-developers - Fedora mailing-lists

18 Jan 2019

From: Christos Sfakianakis csfakian@redhat.com
Add "link_local" attribute in Ip6Address to be used for filtering
off ipv6 link-local addresses when this is desirable (e.g by using
the "ips_filter" method of the Device module). The value of this
attribute is determined by the "is_link_local" method.
Signed-off-by: Christos Sfakianakis csfakian@redhat.com
---
 lnst/Common/IpAddress.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lnst/Common/IpAddress.py b/lnst/Common/IpAddress.py
index e54553d..53dc047 100644
--- a/lnst/Common/IpAddress.py
+++ b/lnst/Common/IpAddress.py
@@ -12,6 +12,8 @@ olichtne@redhat.com (Ondrej Lichtner)
import re
 from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
+from binascii import hexlify
+import socket
 from lnst.Common.LnstError import LnstError
#TODO create various generators for IPNetworks and IPaddresses in the same
@@ -77,6 +79,7 @@ class Ip6Address(BaseIpAddress):
         super(Ip6Address, self).__init__(addr)
self.family = AF_INET6
+        self.link_local = self.is_link_local()
@staticmethod
     def _parse_addr(addr):
@@ -97,6 +100,10 @@ class Ip6Address(BaseIpAddress):
return addr, prefixlen
+    def is_link_local(self):
+        left_half = hexlify(socket.inet_pton(socket.AF_INET6, str(self)))[:16]
+        return left_half == 'fe80000000000000'
+
 def ipaddress(addr):
     """Factory method to create a BaseIpAddress object"""
     if isinstance(addr, BaseIpAddress):
-- 
2.17.1

    