Hello all, an name resolution issue that I hope somebody can help me with.

I have 2960 router, with firmware v1.4.4 installed. VPN users connect OK, name resolution works fine. If I upgrade to v1.5.1.2 VPN users can connect, but name resolution stops working. Hosts are accessible via IP address, not host name. LAN DNS option is not used, as there are two local DNS servers on the local subnets. Local DNS is used in WAN setup rather than ISP/public DNS.

VPN is configured as OpenVPN.

Any help that anyone can offer is appreciated.

Cheers!