network A 192.168.100.0
network B 192.168.200.0
network C 192.168.300.0
network B has a tunnel to network C
network A has a tunnel to network B
traffic will flow from A to B and from B to C
traffic from A will flow to b then to C - However Network A is required to be NATed to a Network b address before proceeding to Network C
with nat (inside) o access-list nonat
nat(inside) 1 0.0.0.0 0.0.0.0
static (inside,inside) 192.168.100.100 192.168.200.100 netmask 255.255.255.0
static (inside,inside) 192.168.200.100 192.168.100.100 netmask 255.255.255.0
give error that global overlap
access-list nonat extend permit ip 192.168.200.0 255.255.255.0 192.168.100.0 255.255.255.0
192.168.200.0 255.255.255.0 192.168.300.0 255.255.255.0
trying to figure out how I work around this issue,