To remove IP addresses from a reseller's IP pool, specify the packet as follows:
<packet version="1.6.0.0">
<reseller>
<ippool-del-ip>
<reseller-id>1234</reseller-id>
<ip-address>192.0.2.122</ip-address>
<ip-address>192.0.2.123</ip-address>
</ippool-del-ip>
</reseller>
</packet>