Hello Rarylson
Concerning the first Syslog message *Jun 15 01:31:38.582: DHCPD: client's VPN is . This Syslog message is associated with a feature of DHCP that enables a DHCP server to locate the VPN ID of each client. This particular feature is part of DHCP relay support for MPLS VPN.
Specifically, this information is used by the relay agent to tell the DHCP server the VPN for every DHCP request it passes to the DHCP server. It is also used to forward the DHCP replies that the DHCP server sends back to the DHCP relay agent. The VPN ID configured on the incoming interface (or the VRF name if no VPN ID is configured) is contained in the VPN identifier option.
This information is included as a suboption found within DHCP Option 82. When there is no VLAN ID or VRF designated, then the value of “.” is substituted.
The second Syslog message *Jun 15 01:31:38.582: DHCPD: No option 125 has to do with a vendor-specific feature called Auto Image Update. This is a feature that allows network devices, such as switches, routers, access points, and others, to be able to download an image or firmware upgrade automatically from a server on the network.
Option 125 indicates to the client the IP address of primary and backup TFTP or SCP servers from which a new firmware image and a new configuration file can be downloaded. It is a method by which you can achieve mass deployment and configuration of many devices with automatic upgrading without the need to individually upgrade each individual device.
If this option is not set, the Syslog message will simply inform you of that. So both of these messages are not errors and can be safely ignored.
As for your suggestion, I will “relay” (no pun intended 
) your message to @ReneMolenaar .
Thanks for your contribution!
I hope this has been helpful!
Laz