Dhcpv6 li fix iapd and ia address naming made same as yang model

[SouravSinhaRoy]

https://redocly.github.io/redoc/?url=https://raw.githubusercontent.com/open-traffic-generator/models/dhcpv6_li_fix/artifacts/openapi.yaml&nocors#tag/Monitor/operation/get_states

This PR changes the client get states to have a array of learned v6 prefixes,addresses,prefix lens and gateway addresses. The array naming convention is made at par with yang model

This shows configuration of one dhcpv6 client and server in two different ports

The first eg is of a dhcpv6 client and the next of a dhcpv6 server

// Case-1: DHCPv6 Client
// DHCPv6 Client is configured on connected interface.
#Creating Ports
import otg
api = otg.api(location="https://localhost/")
config = api.config()
p1 = config.ports.port(name='p1', location='172.17.0.2:50071')[-1]

#Create DHCPv6 client running on connected interface port 1.
p1_d1 = config.devices.device(name='p1_d1')[-1]

p1_eth1 = p1_d1.ethernets.ethernet()[-1]
p1_eth1.connection.port_name = p1.name
p1_eth1.name = 'p1_eth1'

p1_eth1.mac = '64:00:00:00:00:01'
p1_dhcp1 = p1_eth1.dhcpv6_interfaces.dhcpv6client(name = 'p1_dhcp1')[-1]
print(config.serialize())

// Case-2: DHCPv6 Server.
#Creating Ports
import otg
api = otg.api(location="https://localhost/")
config = api.config()
p2 = config.ports.port(name='p2', location='172.17.0.3:50071')[-1]

#Create ethernet and ipv6 running on connected ipv6 interface port 2.
p2_d1 = config.devices.device(name='p1_d1')[-1]
p2_eth1 = p2_d1.ethernets.ethernet()[-1]
p2_eth1.connection.port_name = p2.name
p2_eth1.name = 'p1_eth1'
p2_eth1.mac = '64:00:00:00:00:01'
p2_ip1 = p2_eth1.ipv6_addresses.ipv6(name = 'p2_ip1', address = '2000:0:0:1::2', gateway = '2000:0:0:1::1')[-1]

Creating a DHCPv6 server on the connected interface port2.
p2_dhcp1 = p2_d1.dhcp_server.ipv6_interfaces.v6(name='p2_dhcp1',ipv6_name=p2_ip1.name)[-1]
p2_dhcp1_lease = p2_dhcp1.leases.lease()[-1]
p2_dhcp1_lease_iatype = p2_dhcp1_lease.ia_type.choice="iapd"
p2_dhcp1_lease.ia_type.iapd.start_prefix_address = "a1a1::0"
p2_dhcp1_lease.ia_type.iapd.prefix_step = 1
print(config.serialize())
{
"devices": [
{
"ethernets": [
{
"connection": {
"choice": "port_name",
"port_name": "p1"
},
"dhcpv6_interfaces": [
{
"name": "p1_dhcp1",
"rapid_commit": false
}
],
"mac": "64:00:00:00:00:01",
"mtu": 1500,
"name": "p1_eth1"
}
],
"name": "p1_d1"
}
],
"ports": [
{
"location": "172.17.0.2:50071",
"name": "p1"
}
]
}

{
"devices": [
{
"dhcp_server": {
"ipv6_interfaces": [
{
"ipv6_name": "p2_ip1",
"leases": [
{
"ia_type": {
"choice": "iapd",
"iapd": {
"advertised_prefix_len": 64,
"configured_prefix_len": 64,
"prefix_size": 10,
"prefix_step": 1,
"start_prefix_address": "a1a1::0"
}
},
"lease_time": 86400
}
],
"name": "p2_dhcp1",
"rapid_commit": false,
"reconfigure_via_relay_agent": false.
}
]
},
"ethernets": [
{
"connection": {
"choice": "port_name",
"port_name": "p2"
},
"ipv6_addresses": [
{
"address": "2000:0:0:1::2",
"gateway": "2000:0:0:1::1",
"name": "p2_ip1",
"prefix": 64
}
],
"mac": "64:00:00:00:00:01",
"mtu": 1500,
"name": "p1_eth1"
}
],
"name": "p1_d1"
}
],
"ports": [
{
"location": "172.17.0.3:50071",
"name": "p2"
}
]
}
// This example basically focuses on how flows can be created for dhcp configurations

config := gosnappi.NewConfig()

// skipping configuration of ports, devices, and common protocols like ethernet

// Configure a DHCP Client on device 1
d1Eth1.DhcpV6Interfaces().Add().
SetName("p1d1dchpv6client")

// configure ipv4 on device 2
d2Eth1.
Ipv4Addresses().
Add().
SetName("p2d1ipv6").
SetAddress("2000:0:0:1::2").
SetGateway("2000:0:0:1::1").
SetPrefix(64)

// Configure a DHCP Server on device 2
d2Dhcpv6Server := d6.DhcpServer().Ipv6Interfaces().Add().SetName("p2d2dhcpv6server")

d2Dhcpv6Server.SetIpv6Name("p2d1ipv6").Leases().Add().
SetName("pool1").
SetLeaseTime(3600).
IaType("iapd").
SetStartPrefixAddrress("a1a1::0").
SetStep("0:0:0:1:0:0:0:0")

// configure flow from dhcp client to ipv4 interface on dhcp server side
f1 := config.Flows().Items()[0]
f1.SetName(p1.Name() + " -> " + p2.Name()).
TxRx().Device().
SetTxNames([]string{"p1d1dhcpv6client"}).
SetRxNames([]string{"p2d1ipv6"})

f1Eth := f1.Packet().Add().Ethernet()
f1Eth.Src().SetValue(d1Eth1.Mac())
f1Eth.Dst().Auto()

f1Ip := f1.Packet().Add().Ipv6()
// will be populated automatically with the the dynamically allocated Ip to DHCP client
f1Ip.Src().Auto().Dhcp()
f1Ip.Dst().SetValue("2000:0:0:1::2")

// configure flow from ipv4 interface on the dhcp server side to DHCP client
f2 := config.Flows().Items()[1]
f2.SetName(p2.Name() + " -> " + p1.Name()).
TxRx().Device().
SetTxNames([]string{"p2d1ipv6")}).
SetRxNames([]string{"p1d1dhcpv6client"})

f2Eth := f2.Packet().Add().Ethernet()
f2Eth.Src().SetValue(d2Eth1.Mac())
f2Eth.Dst().Auto()

f2Ip := f2.Packet().Add().Ipv6()
f2Ip.Src().SetValue("2000:0:0:1::2")
// will be populated automatically with the the dynamically allocated Ip to DHCP client
f2Ip.Dst().Auto().Dhcp()

[biplamal]

LGTM