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-rw-r--r--python/vyos/ifconfig/interface.py6
1 files changed, 5 insertions, 1 deletions
diff --git a/python/vyos/ifconfig/interface.py b/python/vyos/ifconfig/interface.py
index 6837e2d6a..d695f05e3 100644
--- a/python/vyos/ifconfig/interface.py
+++ b/python/vyos/ifconfig/interface.py
@@ -40,6 +40,7 @@ from vyos.util import read_file
from vyos.template import is_ipv4
from vyos.template import is_ipv6
from vyos.validate import is_intf_addr_assigned
+from vyos.validate import is_ipv6_link_local
from vyos.validate import assert_boolean
from vyos.validate import assert_list
from vyos.validate import assert_mac
@@ -1042,7 +1043,10 @@ class Interface(Control):
# list of addresses which are no longer in the dict so they can be removed
cur_addr = self.get_addr()
for addr in list_diff(cur_addr, new_addr):
- self.del_addr(addr)
+ # do not clean out link-local IPv6 addresses - it makes no sense
+ # as they will be readded so this prevents any flapping links
+ if not is_ipv6_link_local(addr):
+ self.del_addr(addr)
for addr in new_addr:
self.add_addr(addr)