Issue Description: Can policy-based routing and source NAT concurrently work on an NE40E?
If traffic matches both policy-based routing and source MAT, only source NAT takes effect. If both policy-based routing and source NAT need to take effect, run the redirect ip-nexthop command on the NAT instance.
[~HUAWEI] nat instance cpe1 id 1
[*HUAWEI-nat-instance-cpe1] redirectip-nexthop 192.168.1.1 outbound/inbound
In the inbound direction, outgoing traffic is redirected to the next hop.
In the outbound direction, incoming traffic is directed to the next hop.