interfaces: T2362: delete and re-add all EUI64 addresses if MAC has changed

1 files changed, 7 insertions, 1 deletions

diff --git a/src/conf_mode/interfaces-wireless.py b/src/conf_mode/interfaces-wireless.py
index e7c14e3fb..82a5a892a 100755
--- a/src/conf_mode/interfaces-wireless.py
+++ b/src/conf_mode/interfaces-wireless.py
@@ -25,7 +25,7 @@ from netaddr import EUI, mac_unix_expanded
 
 from vyos.config import Config
 from vyos.configdict import list_diff, vlan_to_dict
-from vyos.ifconfig import WiFiIf
+from vyos.ifconfig import WiFiIf, Section
 from vyos.ifconfig_vlan import apply_vlan_config, verify_vlan_config
 from vyos.template import render
 from vyos.util import chown, call
@@ -402,6 +402,12 @@ def get_config():
     if conf.exists('mac'):
         wifi['mac'] = conf.return_value('mac')
 
+    # Find out if MAC has changed - if so, we need to delete all IPv6 EUI64 addresses
+    # before re-adding them
+    if ( wifi['mac'] and wifi['intf'] in Section.interfaces(section='wireless')
+            and wifi['mac'] != WiFiIf(wifi['intf'], create=False).get_mac() ):
+        wifi['ipv6_eui64_prefix_remove'] += wifi['ipv6_eui64_prefix']
+
     # Maximum number of wireless radio stations
     if conf.exists('max-stations'):
         wifi['max_stations'] = conf.return_value('max-stations')