interfaces: T2362: split set_ipv6_eui64_address into add and del functions

9 files changed, 141 insertions, 65 deletions

diff --git a/python/vyos/ifconfig/interface.py b/python/vyos/ifconfig/interface.py
index 62c30dbf7..a156eddd9 100644
--- a/python/vyos/ifconfig/interface.py
+++ b/python/vyos/ifconfig/interface.py
@@ -1,4 +1,4 @@
-# Copyright 2019 VyOS maintainers and contributors <maintainers@vyos.io>
+# Copyright 2019-2020 VyOS maintainers and contributors <maintainers@vyos.io>
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
@@ -419,39 +419,28 @@ class Interface(Control):
         """
         return self.set_interface('ipv6_autoconf', autoconf)
 
-    def set_ipv6_eui64_address(self, prefix):
+    def add_ipv6_eui64_address(self, prefix):
         """
         Extended Unique Identifier (EUI), as per RFC2373, allows a host to
-        assign iteslf a unique IPv6 address based on a given IPv6 prefix.
+        assign itself a unique IPv6 address based on a given IPv6 prefix.
 
-        If prefix is passed address is assigned, if prefix is '' address is
-        removed from interface.
+        Calculate the EUI64 from the interface's MAC, then assign it
+        with the given prefix to the interface.
         """
-        # if prefix is an empty string convert it to None so mac2eui64 works
-        # as expected
-        if not prefix:
-            prefix = None
 
         eui64 = mac2eui64(self.get_mac(), prefix)
+        prefixlen = prefix.split('/')[1]
+        self.add_addr(f'{eui64}/{prefixlen}')
 
-        if not prefix:
-            # if prefix is empty - thus removed - we need to walk through all
-            # interface IPv6 addresses and find the one with the calculated
-            # EUI-64 identifier. The address is then removed
-            for addr in self.get_addr():
-                addr_wo_prefix = addr.split('/')[0]
-                if is_ipv6(addr_wo_prefix):
-                    if eui64 in IPv6Address(addr_wo_prefix).exploded:
-                        self.del_addr(addr)
-
-            return None
+    def del_ipv6_eui64_address(self, prefix):
+        """
+        Delete the address based on the interface's MAC-based EUI64
+        combined with the prefix address.
+        """
+        eui64 = mac2eui64(self.get_mac(), prefix)
+        prefixlen = prefix.split('/')[1]
+        self.del_addr(f'{eui64}/{prefixlen}')
 
-        # calculate and add EUI-64 IPv6 address
-        if IPv6Network(prefix):
-            # we also need to take the subnet length into account
-            prefix = prefix.split('/')[1]
-            eui64 = f'{eui64}/{prefix}'
-            self.add_addr(eui64 )
 
     def set_ipv6_forwarding(self, forwarding):
         """
diff --git a/src/conf_mode/interfaces-bonding.py b/src/conf_mode/interfaces-bonding.py
index 380457772..267a78870 100755
--- a/src/conf_mode/interfaces-bonding.py
+++ b/src/conf_mode/interfaces-bonding.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2019 VyOS maintainers and contributors
+# Copyright (C) 2019-2020 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -52,7 +52,8 @@ default_config_data = {
     'ip_proxy_arp': 0,
     'ip_proxy_arp_pvlan': 0,
     'ipv6_autoconf': 0,
-    'ipv6_eui64_prefix': '',
+    'ipv6_eui64_prefix': [],
+    'ipv6_eui64_prefix_remove': [],
     'ipv6_forwarding': 1,
     'ipv6_dup_addr_detect': 1,
     'is_bridge_member': False,
@@ -204,7 +205,13 @@ def get_config():
 
     # Get prefix for IPv6 addressing based on MAC address (EUI-64)
     if conf.exists('ipv6 address eui64'):
-        bond['ipv6_eui64_prefix'] = conf.return_value('ipv6 address eui64')
+        bond['ipv6_eui64_prefix'].append(conf.return_value('ipv6 address eui64'))
+
+    # Determine currently effective EUI64 address - to determine which
+    # address is no longer valid and needs to be removed
+    eff_addr = conf.return_effective_value('ipv6 address eui64')
+    if eff_addr and eff_addr not in bond['ipv6_eui64_prefix']:
+        bond['ipv6_eui64_prefix_remove'].append(eff_addr)
 
     # Disable IPv6 forwarding on this interface
     if conf.exists('ipv6 disable-forwarding'):
@@ -434,17 +441,23 @@ def apply(bond):
         b.set_proxy_arp_pvlan(bond['ip_proxy_arp_pvlan'])
         # IPv6 address autoconfiguration
         b.set_ipv6_autoconf(bond['ipv6_autoconf'])
-        # IPv6 EUI-based address
-        b.set_ipv6_eui64_address(bond['ipv6_eui64_prefix'])
         # IPv6 forwarding
         b.set_ipv6_forwarding(bond['ipv6_forwarding'])
         # IPv6 Duplicate Address Detection (DAD) tries
         b.set_ipv6_dad_messages(bond['ipv6_dup_addr_detect'])
 
+        # Delete old IPv6 EUI64 addresses before changing MAC
+        for addr in bond['ipv6_eui64_prefix_remove']:
+            b.del_ipv6_eui64_address(addr)
+
         # Change interface MAC address
         if bond['mac']:
             b.set_mac(bond['mac'])
 
+        # Add IPv6 EUI-based addresses
+        for addr in bond['ipv6_eui64_prefix']:
+            b.add_ipv6_eui64_address(addr)
+
         # Maximum Transmission Unit (MTU)
         b.set_mtu(bond['mtu'])
 
diff --git a/src/conf_mode/interfaces-bridge.py b/src/conf_mode/interfaces-bridge.py
index 93c6db97e..8826c6996 100755
--- a/src/conf_mode/interfaces-bridge.py
+++ b/src/conf_mode/interfaces-bridge.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2019 VyOS maintainers and contributors
+# Copyright (C) 2019-2020 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -47,7 +47,8 @@ default_config_data = {
     'ip_enable_arp_announce': 0,
     'ip_enable_arp_ignore': 0,
     'ipv6_autoconf': 0,
-    'ipv6_eui64_prefix': '',
+    'ipv6_eui64_prefix': [],
+    'ipv6_eui64_prefix_remove': [],
     'ipv6_forwarding': 1,
     'ipv6_dup_addr_detect': 1,
     'igmp_querier': 0,
@@ -162,7 +163,13 @@ def get_config():
 
     # Get prefix for IPv6 addressing based on MAC address (EUI-64)
     if conf.exists('ipv6 address eui64'):
-        bridge['ipv6_eui64_prefix'] = conf.return_value('ipv6 address eui64')
+        bridge['ipv6_eui64_prefix'].append(conf.return_value('ipv6 address eui64'))
+
+    # Determine currently effective EUI64 address - to determine which
+    # address is no longer valid and needs to be removed
+    eff_addr = conf.return_effective_value('ipv6 address eui64')
+    if eff_addr and eff_addr not in bridge['ipv6_eui64_prefix']:
+        bridge['ipv6_eui64_prefix_remove'].append(eff_addr)
 
     # Disable IPv6 forwarding on this interface
     if conf.exists('ipv6 disable-forwarding'):
@@ -283,8 +290,6 @@ def apply(bridge):
         br.set_arp_ignore(bridge['ip_enable_arp_ignore'])
         # IPv6 address autoconfiguration
         br.set_ipv6_autoconf(bridge['ipv6_autoconf'])
-        # IPv6 EUI-based address
-        br.set_ipv6_eui64_address(bridge['ipv6_eui64_prefix'])
         # IPv6 forwarding
         br.set_ipv6_forwarding(bridge['ipv6_forwarding'])
         # IPv6 Duplicate Address Detection (DAD) tries
@@ -318,10 +323,18 @@ def apply(bridge):
         # assign/remove VRF
         br.set_vrf(bridge['vrf'])
 
+        # Delete old IPv6 EUI64 addresses before changing MAC
+        for addr in bridge['ipv6_eui64_prefix_remove']:
+            br.del_ipv6_eui64_address(addr)
+
         # Change interface MAC address
         if bridge['mac']:
             br.set_mac(bridge['mac'])
 
+        # Add IPv6 EUI-based addresses
+        for addr in bridge['ipv6_eui64_prefix']:
+            br.add_ipv6_eui64_address(addr)
+
         # remove interface from bridge
         for intf in bridge['member_remove']:
             br.del_port(intf)
diff --git a/src/conf_mode/interfaces-ethernet.py b/src/conf_mode/interfaces-ethernet.py
index 5a977d797..7f4762e84 100755
--- a/src/conf_mode/interfaces-ethernet.py
+++ b/src/conf_mode/interfaces-ethernet.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2019 VyOS maintainers and contributors
+# Copyright (C) 2019-2020 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -49,7 +49,8 @@ default_config_data = {
     'ip_proxy_arp': 0,
     'ip_proxy_arp_pvlan': 0,
     'ipv6_autoconf': 0,
-    'ipv6_eui64_prefix': '',
+    'ipv6_eui64_prefix': [],
+    'ipv6_eui64_prefix_remove': [],
     'ipv6_forwarding': 1,
     'ipv6_dup_addr_detect': 1,
     'intf': '',
@@ -177,7 +178,13 @@ def get_config():
 
     # Get prefix for IPv6 addressing based on MAC address (EUI-64)
     if conf.exists('ipv6 address eui64'):
-        eth['ipv6_eui64_prefix'] = conf.return_value('ipv6 address eui64')
+        eth['ipv6_eui64_prefix'].append(conf.return_value('ipv6 address eui64'))
+
+    # Determine currently effective EUI64 address - to determine which
+    # address is no longer valid and needs to be removed
+    eff_addr = conf.return_effective_value('ipv6 address eui64')
+    if eff_addr and eff_addr not in eth['ipv6_eui64_prefix']:
+        eth['ipv6_eui64_prefix_remove'].append(eff_addr)
 
     # Disable IPv6 forwarding on this interface
     if conf.exists('ipv6 disable-forwarding'):
@@ -336,13 +343,15 @@ def apply(eth):
         e.set_proxy_arp_pvlan(eth['ip_proxy_arp_pvlan'])
         # IPv6 address autoconfiguration
         e.set_ipv6_autoconf(eth['ipv6_autoconf'])
-        # IPv6 EUI-based address
-        e.set_ipv6_eui64_address(eth['ipv6_eui64_prefix'])
         # IPv6 forwarding
         e.set_ipv6_forwarding(eth['ipv6_forwarding'])
         # IPv6 Duplicate Address Detection (DAD) tries
         e.set_ipv6_dad_messages(eth['ipv6_dup_addr_detect'])
 
+        # Delete old IPv6 EUI64 addresses before changing MAC
+        for addr in eth['ipv6_eui64_prefix_remove']:
+            e.del_ipv6_eui64_address(addr)
+
         # Change interface MAC address - re-set to real hardware address (hw-id)
         # if custom mac is removed
         if eth['mac']:
@@ -350,6 +359,10 @@ def apply(eth):
         elif eth['hw_id']:
             e.set_mac(eth['hw_id'])
 
+        # Add IPv6 EUI-based addresses
+        for addr in eth['ipv6_eui64_prefix']:
+            e.add_ipv6_eui64_address(addr)
+
         # Maximum Transmission Unit (MTU)
         e.set_mtu(eth['mtu'])
 
diff --git a/src/conf_mode/interfaces-l2tpv3.py b/src/conf_mode/interfaces-l2tpv3.py
index 8312d6f37..3698f3e12 100755
--- a/src/conf_mode/interfaces-l2tpv3.py
+++ b/src/conf_mode/interfaces-l2tpv3.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2019 VyOS maintainers and contributors
+# Copyright (C) 2019-2020 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -36,7 +36,7 @@ default_config_data = {
     'local_port': 5000,
     'intf': '',
     'ipv6_autoconf': 0,
-    'ipv6_eui64_prefix': '',
+    'ipv6_eui64_prefix': [],
     'ipv6_forwarding': 1,
     'ipv6_dup_addr_detect': 1,
     'is_bridge_member': False,
@@ -115,7 +115,7 @@ def get_config():
 
     # Get prefix for IPv6 addressing based on MAC address (EUI-64)
     if conf.exists('ipv6 address eui64'):
-        l2tpv3['ipv6_eui64_prefix'] = conf.return_value('ipv6 address eui64')
+        l2tpv3['ipv6_eui64_prefix'].append(conf.return_value('ipv6 address eui64'))
 
     # Disable IPv6 forwarding on this interface
     if conf.exists('ipv6 disable-forwarding'):
@@ -225,8 +225,6 @@ def apply(l2tpv3):
         l.set_mtu(l2tpv3['mtu'])
         # IPv6 address autoconfiguration
         l.set_ipv6_autoconf(l2tpv3['ipv6_autoconf'])
-        # IPv6 EUI-based address
-        l.set_ipv6_eui64_address(l2tpv3['ipv6_eui64_prefix'])
         # IPv6 forwarding
         l.set_ipv6_forwarding(l2tpv3['ipv6_forwarding'])
         # IPv6 Duplicate Address Detection (DAD) tries
@@ -238,6 +236,10 @@ def apply(l2tpv3):
         for addr in l2tpv3['address']:
             l.add_addr(addr)
 
+        # IPv6 EUI-based addresses
+        for addr in l2tpv3['ipv6_eui64_prefix']:
+            l.add_ipv6_eui64_address(addr)
+
         # As the interface is always disabled first when changing parameters
         # we will only re-enable the interface if it is not  administratively
         # disabled
diff --git a/src/conf_mode/interfaces-openvpn.py b/src/conf_mode/interfaces-openvpn.py
index 708ac8f91..99eb8d6ca 100755
--- a/src/conf_mode/interfaces-openvpn.py
+++ b/src/conf_mode/interfaces-openvpn.py
@@ -50,7 +50,8 @@ default_config_data = {
     'hash': '',
     'intf': '',
     'ipv6_autoconf': 0,
-    'ipv6_eui64_prefix': '',
+    'ipv6_eui64_prefix': [],
+    'ipv6_eui64_prefix_remove': [],
     'ipv6_forwarding': 1,
     'ipv6_dup_addr_detect': 1,
     'ipv6_local_address': [],
@@ -316,7 +317,13 @@ def get_config():
 
     # Get prefix for IPv6 addressing based on MAC address (EUI-64)
     if conf.exists('ipv6 address eui64'):
-        openvpn['ipv6_eui64_prefix'] = conf.return_value('ipv6 address eui64')
+        openvpn['ipv6_eui64_prefix'].append(conf.return_value('ipv6 address eui64'))
+
+    # Determine currently effective EUI64 address - to determine which
+    # address is no longer valid and needs to be removed
+    eff_addr = conf.return_effective_value('ipv6 address eui64')
+    if eff_addr and eff_addr not in openvpn['ipv6_eui64_prefix']:
+        openvpn['ipv6_eui64_prefix_remove'].append(eff_addr)
 
     # Disable IPv6 forwarding on this interface
     if conf.exists('ipv6 disable-forwarding'):
@@ -1043,13 +1050,24 @@ def apply(openvpn):
         o.set_alias(openvpn['description'])
         # IPv6 address autoconfiguration
         o.set_ipv6_autoconf(openvpn['ipv6_autoconf'])
-        # IPv6 EUI-based address
-        o.set_ipv6_eui64_address(openvpn['ipv6_eui64_prefix'])
         # IPv6 forwarding
         o.set_ipv6_forwarding(openvpn['ipv6_forwarding'])
         # IPv6 Duplicate Address Detection (DAD) tries
         o.set_ipv6_dad_messages(openvpn['ipv6_dup_addr_detect'])
 
+        # IPv6 EUI-based addresses - only in TAP mode (TUN's have no MAC)
+        # If MAC has changed, old EUI64 addresses won't get deleted,
+        # but this isn't easy to solve, so leave them.
+        # This is even more difficult as openvpn uses a random MAC for the
+        # initial interface creation, unless set by 'lladdr'.
+        # NOTE: right now the interface is always deleted. For future
+        # compatibility when tap's are not deleted, leave the del_ in
+        if openvpn['mode'] == 'tap':
+            for addr in openvpn['ipv6_eui64_prefix_remove']:
+                o.del_ipv6_eui64_address(addr)
+            for addr in openvpn['ipv6_eui64_prefix']:
+                o.add_ipv6_eui64_address(addr)
+
     except:
         pass
 
diff --git a/src/conf_mode/interfaces-pseudo-ethernet.py b/src/conf_mode/interfaces-pseudo-ethernet.py
index d5f308ed3..6f194f814 100755
--- a/src/conf_mode/interfaces-pseudo-ethernet.py
+++ b/src/conf_mode/interfaces-pseudo-ethernet.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2019 VyOS maintainers and contributors
+# Copyright (C) 2019-2020 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -48,7 +48,8 @@ default_config_data = {
     'ip_proxy_arp': 0,
     'ip_proxy_arp_pvlan': 0,
     'ipv6_autoconf': 0,
-    'ipv6_eui64_prefix': '',
+    'ipv6_eui64_prefix': [],
+    'ipv6_eui64_prefix_remove': [],
     'ipv6_forwarding': 1,
     'ipv6_dup_addr_detect': 1,
     'is_bridge_member': False,
@@ -159,7 +160,13 @@ def get_config():
 
     # Get prefix for IPv6 addressing based on MAC address (EUI-64)
     if conf.exists('ipv6 address eui64'):
-        peth['ipv6_eui64_prefix'] = conf.return_value('ipv6 address eui64')
+        peth['ipv6_eui64_prefix'].append(conf.return_value('ipv6 address eui64'))
+
+    # Determine currently effective EUI64 address - to determine which
+    # address is no longer valid and needs to be removed
+    eff_addr = conf.return_effective_value('ipv6 address eui64')
+    if eff_addr and eff_addr not in peth['ipv6_eui64_prefix']:
+        peth['ipv6_eui64_prefix_remove'].append(eff_addr)
 
     # Disable IPv6 forwarding on this interface
     if conf.exists('ipv6 disable-forwarding'):
@@ -306,8 +313,6 @@ def apply(peth):
     p.set_proxy_arp_pvlan(peth['ip_proxy_arp_pvlan'])
     # IPv6 address autoconfiguration
     p.set_ipv6_autoconf(peth['ipv6_autoconf'])
-    # IPv6 EUI-based address
-    p.set_ipv6_eui64_address(peth['ipv6_eui64_prefix'])
     # IPv6 forwarding
     p.set_ipv6_forwarding(peth['ipv6_forwarding'])
     # IPv6 Duplicate Address Detection (DAD) tries
@@ -316,10 +321,18 @@ def apply(peth):
     # assign/remove VRF
     p.set_vrf(peth['vrf'])
 
+    # Delete old IPv6 EUI64 addresses before changing MAC
+    for addr in peth['ipv6_eui64_prefix_remove']:
+        p.del_ipv6_eui64_address(addr)
+
     # Change interface MAC address
     if peth['mac']:
         p.set_mac(peth['mac'])
 
+    # Add IPv6 EUI-based addresses
+    for addr in peth['ipv6_eui64_prefix']:
+        p.add_ipv6_eui64_address(addr)
+
     # Change interface mode
     p.set_mode(peth['mode'])
 
diff --git a/src/conf_mode/interfaces-vxlan.py b/src/conf_mode/interfaces-vxlan.py
index d238ddb57..5ed19ddf2 100755
--- a/src/conf_mode/interfaces-vxlan.py
+++ b/src/conf_mode/interfaces-vxlan.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2019 VyOS maintainers and contributors
+# Copyright (C) 2019-2020 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -39,7 +39,7 @@ default_config_data = {
     'ip_enable_arp_ignore': 0,
     'ip_proxy_arp': 0,
     'ipv6_autoconf': 0,
-    'ipv6_eui64_prefix': '',
+    'ipv6_eui64_prefix': [],
     'ipv6_forwarding': 1,
     'ipv6_dup_addr_detect': 1,
     'is_bridge_member': False,
@@ -118,7 +118,7 @@ def get_config():
 
     # Get prefix for IPv6 addressing based on MAC address (EUI-64)
     if conf.exists('ipv6 address eui64'):
-        vxlan['ipv6_eui64_prefix'] = conf.return_value('ipv6 address eui64')
+        vxlan['ipv6_eui64_prefix'].append(conf.return_value('ipv6 address eui64'))
 
     # Disable IPv6 forwarding on this interface
     if conf.exists('ipv6 disable-forwarding'):
@@ -238,8 +238,6 @@ def apply(vxlan):
         v.set_proxy_arp(vxlan['ip_proxy_arp'])
         # IPv6 address autoconfiguration
         v.set_ipv6_autoconf(vxlan['ipv6_autoconf'])
-        # IPv6 EUI-based address
-        v.set_ipv6_eui64_address(vxlan['ipv6_eui64_prefix'])
         # IPv6 forwarding
         v.set_ipv6_forwarding(vxlan['ipv6_forwarding'])
         # IPv6 Duplicate Address Detection (DAD) tries
@@ -251,6 +249,10 @@ def apply(vxlan):
         for addr in vxlan['address']:
             v.add_addr(addr)
 
+        # IPv6 EUI-based addresses
+        for addr in vxlan['ipv6_eui64_prefix']:
+            v.add_ipv6_eui64_address(addr)
+
         # As the VXLAN interface is always disabled first when changing
         # parameters we will only re-enable the interface if it is not
         # administratively disabled
diff --git a/src/conf_mode/interfaces-wireless.py b/src/conf_mode/interfaces-wireless.py
index 42842f9bd..8f893fa8a 100755
--- a/src/conf_mode/interfaces-wireless.py
+++ b/src/conf_mode/interfaces-wireless.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2019 VyOS maintainers and contributors
+# Copyright (C) 2019-2020 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -88,7 +88,8 @@ default_config_data = {
     'ip_enable_arp_announce': 0,
     'ip_enable_arp_ignore': 0,
     'ipv6_autoconf': 0,
-    'ipv6_eui64_prefix': '',
+    'ipv6_eui64_prefix': [],
+    'ipv6_eui64_prefix_remove': [],
     'ipv6_forwarding': 1,
     'ipv6_dup_addr_detect': 1,
     'is_bridge_member': False,
@@ -370,7 +371,13 @@ def get_config():
 
     # Get prefix for IPv6 addressing based on MAC address (EUI-64)
     if conf.exists('ipv6 address eui64'):
-        wifi['ipv6_eui64_prefix'] = conf.return_value('ipv6 address eui64')
+        wifi['ipv6_eui64_prefix'].append(conf.return_value('ipv6 address eui64'))
+
+    # Determine currently effective EUI64 address - to determine which
+    # address is no longer valid and needs to be removed
+    eff_addr = conf.return_effective_value('ipv6 address eui64')
+    if eff_addr and eff_addr not in wifi['ipv6_eui64_prefix']:
+        wifi['ipv6_eui64_prefix_remove'].append(eff_addr)
 
     # ARP enable ignore
     if conf.exists('ip enable-arp-ignore'):
@@ -696,6 +703,10 @@ def apply(wifi):
         # ignore link state changes
         w.set_link_detect(wifi['disable_link_detect'])
 
+        # Delete old IPv6 EUI64 addresses before changing MAC
+        for addr in wifi['ipv6_eui64_prefix_remove']:
+            w.del_ipv6_eui64_address(addr)
+
         # Change interface MAC address - re-set to real hardware address (hw-id)
         # if custom mac is removed
         if wifi['mac']:
@@ -703,6 +714,10 @@ def apply(wifi):
         elif wifi['hw_id']:
             w.set_mac(wifi['hw_id'])
 
+        # Add IPv6 EUI-based addresses
+        for addr in wifi['ipv6_eui64_prefix']:
+            w.add_ipv6_eui64_address(addr)
+
         # configure ARP filter configuration
         w.set_arp_filter(wifi['ip_disable_arp_filter'])
         # configure ARP accept
@@ -713,8 +728,6 @@ def apply(wifi):
         w.set_arp_ignore(wifi['ip_enable_arp_ignore'])
         # IPv6 address autoconfiguration
         w.set_ipv6_autoconf(wifi['ipv6_autoconf'])
-        # IPv6 EUI-based address
-        w.set_ipv6_eui64_address(wifi['ipv6_eui64_prefix'])
         # IPv6 forwarding
         w.set_ipv6_forwarding(wifi['ipv6_forwarding'])
         # IPv6 Duplicate Address Detection (DAD) tries