Hi, I just wander is somebody could help me. I'm trying to set different DNS server per each DHCP pool and only working solution which I found is below:
https://community.cisco.com/t5/network-security/dns-servers-per-dhcp-pool-on-ftd-fdm/td-p/4038245
The issue with this is, once I restart the firewall, this disappears. I found this is saved in runnning-config but when I try to copy running-config to startup-config, I'm getting Illegal parameter error.
Can anybody advise me something please? I'm really frustrated of FDM at this stage, as would never expect will have problem with configuration of so basic thing.