However, when I get DHCPv6 address for interface deletion, a script execution error occurs. The operation sequence is:

vyos@vyos# set interfaces bridge br1 address dhcpv6 
[edit]
vyos@vyos# commit
[edit]
vyos@vyos# delete interfaces bridge br1 address dhcpv6 
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vyos@vyos# commit

发生如下错误报告：

[ interfaces bridge br1 ]
start-stop-daemon: --start needs --exec or --startas
Try 'start-stop-daemon --help' for more information.
VyOS had an issue completing a command.

We are sorry that you encountered a problem while using VyOS.
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Report Time: 2020-04-24 19:50:35
Image Version: VyOS 1.3-rolling-202004240117
Release Train: equuleus

Built by: [email protected]
Built on: Fri 24 Apr 2020 01:17 UTC
Build UUID: ac176fa2-5d88-4558-9616-aec2f4727947
Build Commit ID: 1f0cad00cf26b7

Architecture: x86_64
Boot via: installed image
System type: guest

Hardware vendor: To Be Filled By O.E.M.
Hardware model: To Be Filled By O.E.M.
Hardware S/N: To Be Filled By O.E.M.
Hardware UUID: 03000200-0400-0500-0006-000700080009

Traceback (most recent call last):

File "/usr/libexec/vyos/conf_mode/interfaces-bridge.py", line 392, in <module>
  apply(c)
File "/usr/libexec/vyos/conf_mode/interfaces-bridge.py", line 368, in apply
  br.del_addr(addr)
File "/usr/lib/python3/dist-packages/vyos/ifconfig/interface.py", line 687, in del_addr
  self.dhcp.v6.delete()
File "/usr/lib/python3/dist-packages/vyos/ifconfig/dhcp.py", line 194, in delete
  self._cmd(cmd.format(**self.file))
File "/usr/lib/python3/dist-packages/vyos/ifconfig/control.py", line 48, in _cmd
  return cmd(command, self.debug)
File "/usr/lib/python3/dist-packages/vyos/util.py", line 139, in cmd
  raise OSError(code, feedback)

ProcessLookupError: [Errno 3] failed to run command: start-stop-daemon --start --oknodo --quiet --pidfile /var/lib/dhcp/dhclient_br1.v6pid
returned:
exit code: 3

interfaces bridge br1 failed
Commit failed
[edit]