dhcpcd-discuss

Hi,

Trying to retrieve an IPv6 allocation from a server host. dhcpcd appears 
to be set up correctly and is running. However, running the command 
systemctl status dhcpcd@enp1s0.service reports running OK then 10 
identical lines containing "Jan 08 22:21:54 sd-136208 dhcpcd[409]: 
ipv6_newaddr: Invalid argument"

In response and following the ArchWiki dhcpcd page, I commented out the 
DUID statement and uncommented the clientid statement in 
/etc/dhcpcd.conf, rebooted and got the same response. Not at all sure it 
was the right thing to do and I can always change it back again if wrong.

The latest command and output:

~]# systemctl status dhcpcd@enp1s0.service
* dhcpcd@enp1s0.service - dhcpcd on enp1s0
     Loaded: loaded (/usr/lib/systemd/system/dhcpcd@.service; enabled; 
vendor p>
     Active: active (running) since Wed 2020-01-08 21:54:21 CET; 28min ago
    Process: 353 ExecStart=/usr/bin/dhcpcd -q -w enp1s0 (code=exited, 
status=0/>
   Main PID: 409 (dhcpcd)
      Tasks: 1 (limit: 4703)
     Memory: 2.2M
     CGroup: /system.slice/system-dhcpcd.slice/dhcpcd@enp1s0.service
             `-409 dhcpcd: enp1s0 [ip4] [ip6]

Jan 08 22:21:54 sd-136208 dhcpcd[409]: ipv6_newaddr: Invalid argument
Jan 08 22:21:57 sd-136208 dhcpcd[409]: ipv6_newaddr: Invalid argument
Jan 08 22:22:00 sd-136208 dhcpcd[409]: ipv6_newaddr: Invalid argument
Jan 08 22:22:04 sd-136208 dhcpcd[409]: ipv6_newaddr: Invalid argument
Jan 08 22:22:09 sd-136208 dhcpcd[409]: ipv6_newaddr: Invalid argument
Jan 08 22:22:13 sd-136208 dhcpcd[409]: ipv6_newaddr: Invalid argument
Jan 08 22:22:18 sd-136208 dhcpcd[409]: ipv6_newaddr: Invalid argument
Jan 08 22:22:21 sd-136208 dhcpcd[409]: ipv6_newaddr: Invalid argument
Jan 08 22:22:25 sd-136208 dhcpcd[409]: ipv6_newaddr: Invalid argument
Jan 08 22:22:30 sd-136208 dhcpcd[409]: ipv6_newaddr: Invalid argument

This may be related to an earlier discussion regarding dhcpcd making 
multiple rapid requests but I thought that had been fixed. Having said 
that, I am not sure I followed the detail correctly as all this is very 
new to me.

Could/would somebody please point me in the right direction on this?

TIA,

Mike