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-rw-r--r--python/vyos/ifconfig/interface.py17
1 files changed, 13 insertions, 4 deletions
diff --git a/python/vyos/ifconfig/interface.py b/python/vyos/ifconfig/interface.py
index 892495dec..537c4bc2d 100644
--- a/python/vyos/ifconfig/interface.py
+++ b/python/vyos/ifconfig/interface.py
@@ -901,10 +901,15 @@ class Interface(Control):
if isinstance(new_addr, str):
new_addr = [new_addr]
- # ensure DHCP/DHCPv6 is stopped (when not configured explicitly)
- for proto in ['dhcp', 'dhcpv6']:
- if proto not in new_addr:
- self.del_addr(proto)
+ # always ensure DHCP client is stopped (when not configured explicitly)
+ if 'dhcp' not in new_addr:
+ self.del_addr('dhcp')
+
+ # always ensure DHCPv6 client is stopped (when not configured as client
+ # for IPv6 address or prefix delegation
+ dhcpv6pd = jmespath.search('dhcpv6_options.pd', config)
+ if 'dhcpv6' not in new_addr or dhcpv6pd == None:
+ self.del_addr('dhcpv6')
# determine IP addresses which are assigned to the interface and build a
# list of addresses which are no longer in the dict so they can be removed
@@ -915,6 +920,10 @@ class Interface(Control):
for addr in new_addr:
self.add_addr(addr)
+ # start DHCPv6 client when only PD was configured
+ if dhcpv6pd != None:
+ self.set_dhcpv6(True)
+
# There are some items in the configuration which can only be applied
# if this instance is not bound to a bridge. This should be checked
# by the caller but better save then sorry!