Hi Community,
we are using a WZR-HP-G300NH2 with Firmware DD-WRT v24SP2-MULTI (06/03/12) std - build 19154 as Access Point for our WIFI mobile devices (smart phones, Laptops ect.). The buffalo device works as a router and the internal NIC is configured as a seperate LAN (192.168.11.0/24) in NAT mode and the WAN interface is configured with an IP address from our local subnet of our internal LAN. Please note draft and screenshots below.
The problem is that we cannot resolv IP addresses from internal resources from a WIFI connected mobile device but only external addresses. So we can reach
www.google.de without problems but we cannot connect to wiki.domain.de with an internal IP address (192.168.110.100). When we sniff the traffic with tcpdump on the Buffalo box we can see that the DNS request leave the Buffalo box to the right DNS server and we can see also a correct answer from the DNS server to the Buffalo box but the name resolution won't work anyway.
We are pretty sure that the problem is located in the Buffalo box but we have no clue where the misconfiguration is. Any hints?
Thx & Bye Tom