I was suggested to move this topic here, to the business forum.

I have a TL-R600VPN V4.

Configured like a gateway with a telecom modem attached to the WAN port.

It works, Internet connection, NAT, DNS forwarding, UPnP, VPN (IPsec peer to peer & L2TP server), DHCP and DHCP reservation.

It seems to work like a charm, but... I have a problem that make the toy unusable if i'm not able to solve it.

Internal DHCP releases numbers properly. In my DHCP Client list there is the host name for any of the device that gain the number. When I ping the name the TL-R600VPN DNS is not able to resolve the internal name and the host is unreachable, but if I use the IP number.

It makes no sense to me. DHCP distributes numbers and it knows hosts. Local DNS rely should be able to resolve local names handled by DHCP. I supposed it was a problem of IP domain, but I can't find any place where to assign domain (nor LAN host name to be honest).

What's wrong in my configuration?

Thanks, Eugenio.