nitrolife

My provider doesn’t provide IPv6, but I rented a server in a data center, bought a subnet, and tunneled it home via WireGuard. So the scheme is roughly: VPS (fd00:1::/64) <-> (fd00:1::/64) Home router (realv6/64) <-> Home network

Router configuration:

/etc/sysctl.d/10-ipv6-privacy.conf

net.ipv6.conf.all.use_tempaddr = 0
net.ipv6.conf.default.use_tempaddr = 0
net.ipv6.conf.all.forwarding = 1
net.ipv6.conf.default.forwarding = 1

/etc/radvd.conf

interface br0 {
    AdvSendAdvert on;
    MinRtrAdvInterval 3;
    MaxRtrAdvInterval 30;

    AdvManagedFlag on;      # M=1 → Address via DHCPv6
    AdvOtherConfigFlag on;  # O=1 → Additional options via DHCPv6

    # SLAAC is still possible for Android
    prefix realv6::/64 {
        AdvOnLink on;
        AdvAutonomous on;   # Allow SLAAC
    };

    RDNSS realv6::1 {
        AdvRDNSSLifetime 1800;
    };
    DNSSL home.lan {
        AdvDNSSLLifetime 1800;
    };
};

/etc/kea/kea-dhcp6.conf

{
  "Dhcp6": {
    "interfaces-config": {
      "interfaces": [ "br0" ]
    },

    "lease-database": {
      "type": "memfile",
      "persist": true,
      "lfc-interval": 86400,
      "name": "/var/lib/kea/dhcp6.leases"
    },

    "renew-timer": 21600,
    "rebind-timer": 43200,
    "preferred-lifetime": 43200,
    "valid-lifetime": 86400,

    "subnet6": [
      {
        "id": 1,
        "subnet": "realv6::/64",
        "interface": "br0",
        "pools": [
          { "pool": "realv6::1000 - realv6::ffff" }
        ],
        "option-data": [
          { "name": "dns-servers",   "data": "realv6::1" },
          { "name": "domain-search", "data": "home.lan" }
        ]
      }
    ],

    "loggers": [
      {
        "name": "kea-dhcp6",
        "output-options": [
          { "output": "stdout" }
        ],
        "severity": "WARN"
      }
    ]
  }
}

And of course, iptables is necessary. Something like: /etc/iptables/ip6tables.rules

# Generated by ip6tables-save v1.6.0 on Thu Sep  8 13:29:11 2016
*nat
:PREROUTING ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
COMMIT

*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
#BASE INPUT
-A INPUT -i eno1 -j DROP
-A OUTPUT -o eno1 -j DROP
-A INPUT -i lo -j ACCEPT
-A INPUT -i br0 -j ACCEPT
-A INPUT -p ipv6-icmp -j ACCEPT
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -i eno1 -j DROP
-A FORWARD -i br0 -j ACCEPT
-A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -p ipv6-icmp -j ACCEPT
COMMIT

Just looking for “minipc pfsense”

if you have an uplink of 1 Gbit/s or less, you can easily solve the problem of ports by purchasing a switch for $3. By the way, there is a mini PC with 4/6/8 ports and even with optical fiber.

and in general, if topic starter build own server, he can just build a router out of it too. the set of programs is not very large: kea-dhcp, radvd, iptables. that’s all. for WiFi, you will need a compatible card in the server or a separate access point like ubiquity.

not a very popular opinion, but if you want an inexpensive, really inexpensive variant, take the AMD MX9070XT. AMD is not the most popular AI cards, but they are not bad with ROCm and for the price of 5090 you can put 5 cards (80 GB vram)