BNGBlaster not sending IA_NA request for PPPoE

[xuoguoto]

Describe the bug

I am using bngblaster to test dual stack PPPoE with IA_NA and IA_PD via DHCP6. While the PPPoE and IA_PD part is working fine, the DHCPv6 solicit packet requests only IA_PD and not IA_NA. Not sure if this is some issue with my configuration.

To Reproduce

Version (bngblaster -v):

bngblaster --version
Version: 0.9.2
Compiler: GNU (11.4.0)
IO Modes: packet_mmap_raw (default), packet_mmap, raw

JSON configuration:

{
  "dhcpv6": {
    "enable": true,
    "rapid-commit": true
  },
  "interfaces": {
    "access": [
      {
        "authentication-protocol": "PAP",
        "interface": "enp8s0",
        "outer-vlan": 10,
        "inner-vlan": 20,
        "qinq": true,
        "monkey": false,
        "stream-group-id": 1,
        "type": "pppoe",
        "vlan-mode": "N:1"
      }
    ],
    "network": {
      "address": "172.16.200.20",
      "address-ipv6": "2001:470:ed64:2::20",
      "gateway": "172.16.200.21",
      "gateway-ipv6": "2001:470:ed64:2::21",
      "interface": "enp9s0"
    }
  },
  "ppp": {
    "authentication": {
      "password": "passwd",
      "retry": 2,
      "timeout": 4,
      "username": "usr-btr-0000{session-global}"
    },
    "ip6cp": {
      "conf-request-retry": 2,
      "conf-request-timeout": 4,
      "enable": true
    },
    "ipcp": {
      "conf-request-retry": 2,
      "conf-request-timeout": 4,
      "enable": true,
      "request-dns1": true,
      "request-dns2": true,
      "request-ip": true
    },
    "lcp": {
      "conf-request-retry": 2,
      "conf-request-timeout": 4,
      "keepalive-interval": 10,
      "keepalive-retry": 3
    },
    "mru": 1492
  },
  "pppoe": {
    "discovery-retry": 2,
    "discovery-timeout": 4,
    "reconnect": true
  },
  "session-traffic": {
    "ipv4-pps": 1,
    "ipv6-pps": 1,
    "ipv6pd-pps": 1
  },
  "sessions": {
    "count": 10,
    "max-outstanding": 200,
    "start-rate": 200,
    "stop-rate": 200
  }
}

Steps to reproduce the behavior:

1. Start BNGBlaster with the given config

Expected behavior

BNGBlaster sends request for both IA_NA and IA_PD in DHCPv6 Solicit packet

Thanks, If any additional information is required to triangulate this, I will be happy to provide.

x.

[GIC-de]

Using IA_NA to assign the PPPoE IPv6 WAN address is uncommon, but I can try to add support here. Unfortunately I'm unable to test, so you need to verify before merging to dev branch.

Not mandatory but would be interesting to better understand the exact use case here (is this a BNG, which vendor, ...)?