Weird DHCPv6 configuration

Hi,

I think I have a weird configuration: here is the line that I think is not normal returned by the /export command:

/ipv6 dhcp-client
add add-default-route=yes default-route-distance=2 dhcp-options=auth,classidentifier,userclass,request dhcp-options=auth,classidentifier,userclass,request interface=vlan832-orange-internet pool-name=\
    pool_FT_6 rapid-commit=no request=prefix

Why is “dhcp-options=auth,classidentifier,userclass,request” twice ?

I have tried removing that configuration line and re-adding it via command line and via winbox:

/ipv6 dhcp-client
add add-default-route=yes default-route-distance=2 dhcp-options=auth,classidentifier,userclass,request interface=vlan832-orange-internet pool-name=pool_FT_6 rapid-commit=no request=prefix

And /export command is still returning “dhcp-options=auth,classidentifier,userclass,request” twice… Is that normal ? Or a bug ? Is there any workaround ?

Versions details:

# RouterOS 7.9.2
# software id = GHV6-KRRM
# model = RB5009UPr+S+