We do DHCP in our routers. When we installed some 2811 routers we discovered clients getting DHCP from those routers do not register in the reverse DNS zone. I set up a lab and did recreate the issue. If I swap out the 2811 in my lab with an 3620(in this case) the clients do register in the reverse dns zone. My dhcp scope is as follows:
ip dhcp pool com2
network 10.99.25.0 255.255.255.0
dns-server 10.99.16.139 10.99.16.120
netbios-name-server 10.99.16.39 10.99.100.20
Nothing special in the scope.
How do I get my clients to register to the reverse DNS zone when using a 2800 series router?