diff --git a/python/netlink/route/address.py b/python/netlink/route/address.py
index 8fab97d..a8da1ed 100644
--- a/python/netlink/route/address.py
+++ b/python/netlink/route/address.py
@@ -147,17 +147,29 @@ class Address(netlink.Object):
         @netlink.nlattr('address.flags', type=str, fmt=util.string)
 	@property
         def flags(self):
-        	"""Flags"""
+        	"""Flags
+
+                Setting this property will *Not* reset flags to value you supply in
+
+                Examples:
+                addr.flags = '+xxx' # add xxx flag
+                addr.flags = 'xxx'  # exactly the same
+                addr.flags = '-xxx' # remove xxx flag
+                addr.flags = [ '+xxx', '-yyy' ] # list operation
+        	"""
         	flags = capi.rtnl_addr_get_flags(self._rtnl_addr)
                 return capi.rtnl_addr_flags2str(flags, 256)[0].split(',')
 
 	def _set_flag(self, flag):
-                if flag[0] == '-':
+                if flag.startswith('-'):
                         i = capi.rtnl_addr_str2flags(flag[1:])
                         capi.rtnl_addr_unset_flags(self._rtnl_addr, i)
-                else:
+                elif flag.startswith('+'):
                         i = capi.rtnl_addr_str2flags(flag[1:])
                         capi.rtnl_addr_set_flags(self._rtnl_addr, i)
+                else:
+                        i = capi.rtnl_addr_str2flags(flag)
+                        capi.rtnl_addr_set_flags(self._rtnl_addr, i)
 
 	@flags.setter
         def flags(self, value):
diff --git a/python/netlink/route/link.py b/python/netlink/route/link.py
index 8c87971..b7a377a 100644
--- a/python/netlink/route/link.py
+++ b/python/netlink/route/link.py
@@ -213,17 +213,27 @@ class Link(netlink.Object):
         @netlink.nlattr('link.flags', type=str, fmt=util.string)
 	@property
         def flags(self):
-        	"""Flags"""
+                """Flags
+                Setting this property will *Not* reset flags to value you supply in
+                Examples:
+                link.flags = '+xxx' # add xxx flag
+                link.flags = 'xxx'  # exactly the same
+                link.flags = '-xxx' # remove xxx flag
+                link.flags = [ '+xxx', '-yyy' ] # list operation
+                """
         	flags = capi.rtnl_link_get_flags(self._rtnl_link)
                 return capi.rtnl_link_flags2str(flags, 256)[0].split(',')
 
 	def _set_flag(self, flag):
-                if flag[0] == '-':
+                if flag.startswith('-'):
                         i = capi.rtnl_link_str2flags(flag[1:])
                         capi.rtnl_link_unset_flags(self._rtnl_link, i)
-                else:
+                elif flag.startswith('+'):
                         i = capi.rtnl_link_str2flags(flag[1:])
                         capi.rtnl_link_set_flags(self._rtnl_link, i)
+                else:
+                        i = capi.rtnl_link_str2flags(flag)
+                        capi.rtnl_link_set_flags(self._rtnl_link, i)
 
 	@flags.setter
         def flags(self, value):
diff --git a/python/netlink/route/links/vlan.py b/python/netlink/route/links/vlan.py
index c9fe2a7..bb339d0 100644
--- a/python/netlink/route/links/vlan.py
+++ b/python/netlink/route/links/vlan.py
@@ -32,15 +32,26 @@ class VLANLink(object):
         @netlink.nlattr('link.vlan.flags', type=str)
 	@property
         def flags(self):
-        	"""vlan flags"""
+                """ VLAN flags
+                Setting this property will *Not* reset flags to value you supply in
+                Examples:
+                link.flags = '+xxx' # add xxx flag
+                link.flags = 'xxx'  # exactly the same
+                link.flags = '-xxx' # remove xxx flag
+                link.flags = [ '+xxx', '-yyy' ] # list operation
+                """
         	flags = capi.rtnl_link_vlan_get_flags(self._link)
                 return capi.rtnl_link_vlan_flags2str(flags, 256)[0].split(',')
 
 	def _set_flag(self, flag):
-                i = capi.rtnl_link_vlan_str2flags(flag[1:])
-                if flag[0] == '-':
+                if flag.startswith('-'):
+                        i = capi.rtnl_link_vlan_str2flags(flag[1:])
                         capi.rtnl_link_vlan_unset_flags(self._link, i)
+                elif flag.startswith('+'):
+                        i = capi.rtnl_link_vlan_str2flags(flag[1:])
+                        capi.rtnl_link_vlan_set_flags(self._link, i)
                 else:
+                        i = capi.rtnl_link_vlan_str2flags(flag)
                         capi.rtnl_link_vlan_set_flags(self._link, i)
 
 	@flags.setter