scripts/network/juniper/src-nat-pool-add.xml

<rpc>
<load-configuration>
<configuration>
<security>
<nat>
<source>
<pool>
<name>%pool-name%</name>
<address>%address%</address>
</pool>
</source>
</nat>
</security>
</configuration>
</load-configuration>
</rpc>