ip nat inside source list bunch_of_hosts pool some_pool overload
ip nat inside source static 10.10.10.10 18.104.22.168 no-payload
there is a DNS record:
some_host.some.domain IN A 22.214.171.124
from host in bunch_of_hosts list:
$ dig some_host.some.domain @126.96.36.199
some_host.some.domain IN A 10.10.10.10
Who's idea was that? How to disable it??
Clarification: DNS server, hosting some.domain is NOT inside our network. It's completely different organisation and thir DNS gives the right answer when asked outside this NAT setup.
Can you try using these commands? They should stop IOS rewriting the DNS contents as part of its NAT ALG.
no ip nat service alg tcp dns
no ip nat service alg udp dns