Have an issue trying to get IOS to NAT both src and dst addresses.
It looks like traffic is being NAT'ed ok going from outside to in and i can see a reponse packet coming into the inside interface on the NAT router but it gets lost and never makes it back through the outside interface.
When i ping from 188.8.131.52 to 184.108.40.206 no reply but nat seems to be working- only 1 way though
debug ip nat
*Mar 1 00:31:50.231: NAT*: o: icmp (220.127.116.11, 11) -> (18.104.22.168, 11) 
*Mar 1 00:31:50.235: NAT*: o: icmp (22.214.171.124, 11) -> (126.96.36.199, 11) 
*Mar 1 00:31:50.235: NAT*: s=188.8.131.52->192.168.241.128, d=184.108.40.206 
*Mar 1 00:31:50.239: NAT*: s=192.168.241.128, d=220.127.116.11->172.26.0.1 
i feel i am missing something obvious
All assistance appreciated
test rtr-------------outside---NATrtr----inside---------test target 172.26.0.1
cfg extract shown
ip address 192.168.241.1 255.255.255.0
ip nat inside
ip address 18.104.22.168 255.255.255.0
ip nat outside
clock rate 2000000
ip route 172.26.0.0 255.255.0.0 192.168.241.2
!ip nat inside source static 172.26.0.1 22.214.171.124
ip nat outside source static 126.96.36.199 192.168.241.128
I think for NVI, the regular NAT rule wont work. Because in NVI there is no concept of inside and outside network, you need to remove the inside/outside from your NAT rule.
I think your problem is there is no route for the return traffic. try add a static route for 192.168.241.128, and point to s0/0, see if that helps.