set system option kernel cpu disable-nmi-watchdog
set system option kernel cpu isolate-cpus '2-3'
set system option kernel cpu nohz-full '2-3'
set system option kernel cpu rcu-no-cbs '2-3'
set system option kernel disable-hpet
set system option kernel disable-mce
set system option kernel disable-mitigations
set system option kernel disable-softlockup
set system option kernel memory hugepage-size 2M hugepage-count '1024'
set system option reboot-on-upgrade-failure '5'
set system syslog local facility all level 'info'
set system syslog local facility local7 level 'debug'
set vpp settings interface eth0
set vpp settings interface eth1
set vpp settings poll-sleep-usec '1000'
set vpp settings resource-allocation memory main-heap-size '1G'

set vpp nat nat44 address-pool translation interface 'eth1'
set vpp nat nat44 interface inside 'eth0'
set vpp nat nat44 interface outside 'eth1'

delete vpp settings interface eth1

vyos@vyos# commit
[ vpp ]

WARNING: NOTE: Current dataplane capacity (estimated): 2 M IPv4
routes. Exceeding these values will lead to a dataplane out-of-memory
condition and a crash. Extensive use of features like ACLs, NAT and
others may reduce the numbers above. Please read the documentation for
details: https://docs.vyos.io/

dependent vpp_nat_nat44: eth1 must be a VPP interface for outside NAT
interface
[[vpp]] failed
Commit failed
[edit]

vyos@vyos# show | commands | grep nat
set vpp nat nat44 address-pool translation interface 'eth1'
set vpp nat nat44 interface inside 'eth0'
set vpp nat nat44 interface outside 'eth1'
[edit]
vyos@vyos# run show vpp nat nat44 interfaces 
NAT44 interfaces:
[edit]
vyos@vyos#