**Summary**
Add source NAT for VPP
**Use case**
Use accelerated dataplane for NAT
**Additional information**
minimal configuration
```
set vpp nat source rule 10 inbound-interface 'eth2'
set vpp nat source rule 10 outbound-interface 'eth1'
set vpp nat source rule 10 translation address masquarade
```
Additional features
```
set vpp nat source ipfix collector address 10.0.0.1
set vpp nat source ipfix collector source-address 10.0.0.1
set vpp nat source ipfix log
```