Steps to reproduce:

When I try to add host into zabbix via API (using pyzabbix) like this:

zabbix.host.create({
 "name": host_name,
 "host": host_name,
 "interfaces": [
{ "type": 2, "main": 1, "useip": 1, "ip": hostip, "dns": "", "port": "161" }
],
 "groups": [
{ "groupid": "15" }
],
 "templates": [
{ "templateid": "10186" }
]
}) 

I see the exception:

pyzabbix.ZabbixAPIException: ('Error -32602: Invalid params., Incorrect arguments passed to function.', -32602)

If I choose the "type" 1(3,4) - all ok.

This works in version 4.4 but does not work in version 5.0