diff --git a/nzr-api/src/lib.rs b/nzr-api/src/lib.rs
index 7ff1a10..285fe96 100644
--- a/nzr-api/src/lib.rs
+++ b/nzr-api/src/lib.rs
@@ -1,3 +1,5 @@
+use std::net::Ipv4Addr;
+
 use model::{CreateStatus, Instance, Subnet};
 
 pub mod args;
@@ -6,6 +8,15 @@ pub mod model;
 pub mod net;
 
 pub use hickory_proto;
+use net::mac::MacAddr;
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub enum InstanceQuery {
+    Name(String),
+    MacAddr(MacAddr),
+    Ipv4Addr(Ipv4Addr),
+}
 
 #[tarpc::service]
 pub trait Nazrin {
@@ -18,6 +29,8 @@ pub trait Nazrin {
     /// This should involve deleting all related disks and clearing
     /// the lease information from the subnet data, if any.
     async fn delete_instance(name: String) -> Result<(), String>;
+    /// Gets a single instance by the given InstanceQuery.
+    async fn find_instance(query: InstanceQuery) -> Result<Option<Instance>, String>;
     /// Gets a list of existing instances.
     async fn get_instances(with_status: bool) -> Result<Vec<Instance>, String>;
     /// Cleans up unusable entries in the database.
@@ -34,4 +47,20 @@ pub trait Nazrin {
     async fn get_subnets() -> Result<Vec<Subnet>, String>;
     /// Deletes an existing subnet.
     async fn delete_subnet(interface: String) -> Result<(), String>;
+    // Gets the cloud-init user-data for the given instance.
+    async fn get_instance_userdata(id: i32) -> Result<Vec<u8>, String>;
 }
+
+/// Create a new NazrinClient.
+pub fn new_client(sock: tokio::net::UnixStream) -> NazrinClient {
+    use tarpc::tokio_serde::formats::Bincode;
+    use tarpc::tokio_util::codec::LengthDelimitedCodec;
+
+    let framed_io = LengthDelimitedCodec::builder()
+        .length_field_type::<u32>()
+        .new_framed(sock);
+    let transport = tarpc::serde_transport::new(framed_io, Bincode::default());
+    NazrinClient::new(Default::default(), transport).spawn()
+}
+
+pub use tarpc::context::current as default_ctx;
diff --git a/nzrd/migrations/2024081101_no_cimeta/down.sql b/nzrd/migrations/2024081101_no_cimeta/down.sql
new file mode 100644
index 0000000..f79ad1f
--- /dev/null
+++ b/nzrd/migrations/2024081101_no_cimeta/down.sql
@@ -0,0 +1 @@
+ALTER TABLE instances ADD COLUMN ci_metadata TEXT NOT NULL;
\ No newline at end of file
diff --git a/nzrd/migrations/2024081101_no_cimeta/up.sql b/nzrd/migrations/2024081101_no_cimeta/up.sql
new file mode 100644
index 0000000..17af58f
--- /dev/null
+++ b/nzrd/migrations/2024081101_no_cimeta/up.sql
@@ -0,0 +1 @@
+ALTER TABLE instances DROP COLUMN ci_metadata;
\ No newline at end of file
diff --git a/nzrd/src/cloud.rs b/nzrd/src/cloud.rs
deleted file mode 100644
index e0dc299..0000000
--- a/nzrd/src/cloud.rs
+++ /dev/null
@@ -1,149 +0,0 @@
-use std::net::Ipv4Addr;
-
-use hickory_server::proto::rr::Name;
-use serde::Serialize;
-use serde_with::skip_serializing_none;
-use std::collections::HashMap;
-
-use nzr_api::net::{cidr::CidrV4, mac::MacAddr};
-
-#[derive(Debug, Serialize)]
-#[serde(rename_all = "kebab-case")]
-pub struct Metadata<'a> {
-    instance_id: &'a str,
-    local_hostname: &'a str,
-    public_keys: Option<Vec<&'a String>>,
-}
-
-impl<'a> Metadata<'a> {
-    pub fn new(instance_id: &'a str) -> Self {
-        Self {
-            instance_id,
-            local_hostname: instance_id,
-            public_keys: None,
-        }
-    }
-
-    pub fn ssh_pubkeys(mut self, pubkeys: &'a [String]) -> Self {
-        self.public_keys = Some(pubkeys.iter().filter(|i| !i.is_empty()).collect());
-        self
-    }
-}
-
-#[derive(Debug, Serialize)]
-pub struct NetworkMeta<'a> {
-    version: u32,
-    ethernets: HashMap<String, EtherNic<'a>>,
-    #[serde(skip)]
-    ethnum: u8,
-}
-
-impl<'a> NetworkMeta<'a> {
-    pub fn new() -> Self {
-        Self {
-            version: 2,
-            ethernets: HashMap::new(),
-            ethnum: 0,
-        }
-    }
-
-    /// Define a NIC with a static address.
-    pub fn static_nic(
-        mut self,
-        match_data: EtherMatch<'a>,
-        cidr: &'a CidrV4,
-        gateway: &'a Ipv4Addr,
-        dns: DNSMeta<'a>,
-    ) -> Self {
-        self.ethernets.insert(
-            format!("eth{}", self.ethnum),
-            EtherNic {
-                r#match: match_data,
-                addresses: Some(vec![cidr]),
-                gateway4: Some(gateway),
-                dhcp4: false,
-                nameservers: Some(dns),
-            },
-        );
-        self.ethnum += 1;
-        self
-    }
-
-    #[allow(dead_code)]
-    pub fn dhcp_nic(mut self, match_data: EtherMatch<'a>) -> Self {
-        self.ethernets.insert(
-            format!("eth{}", self.ethnum),
-            EtherNic {
-                r#match: match_data,
-                addresses: None,
-                gateway4: None,
-                dhcp4: true,
-                nameservers: None,
-            },
-        );
-        self.ethnum += 1;
-        self
-    }
-}
-
-#[derive(Debug, Serialize)]
-pub struct Ethernets<'a> {
-    nics: Vec<EtherNic<'a>>,
-}
-
-#[derive(Debug, Serialize)]
-pub struct EtherNic<'a> {
-    r#match: EtherMatch<'a>,
-    addresses: Option<Vec<&'a CidrV4>>,
-    gateway4: Option<&'a Ipv4Addr>,
-    dhcp4: bool,
-    nameservers: Option<DNSMeta<'a>>,
-}
-
-#[skip_serializing_none]
-#[derive(Default, Debug, Serialize)]
-pub struct EtherMatch<'a> {
-    name: Option<&'a str>,
-    macaddress: Option<&'a MacAddr>,
-    driver: Option<&'a str>,
-}
-
-impl<'a> EtherMatch<'a> {
-    #[allow(dead_code)]
-    pub fn name(name: &'a str) -> Self {
-        Self {
-            name: Some(name),
-            ..Default::default()
-        }
-    }
-
-    pub fn mac_addr(addr: &'a MacAddr) -> Self {
-        Self {
-            macaddress: Some(addr),
-            ..Default::default()
-        }
-    }
-
-    #[allow(dead_code)]
-    pub fn driver(driver: &'a str) -> Self {
-        Self {
-            driver: Some(driver),
-            ..Default::default()
-        }
-    }
-}
-
-#[derive(Debug, Serialize)]
-pub struct DNSMeta<'a> {
-    search: Vec<Name>,
-    addresses: &'a Vec<Ipv4Addr>,
-}
-
-impl<'a> DNSMeta<'a> {
-    pub fn with_addrs(search: Option<Vec<Name>>, addrs: &'a Vec<Ipv4Addr>) -> Self {
-        Self {
-            addresses: addrs,
-            search: search.unwrap_or_default(),
-        }
-    }
-}
diff --git a/nzrd/src/cmd/vm.rs b/nzrd/src/cmd/vm.rs
index 07f3789..736800a 100644
--- a/nzrd/src/cmd/vm.rs
+++ b/nzrd/src/cmd/vm.rs
@@ -6,7 +6,6 @@ use nzr_virt::{datasize, dom, vol};
 use tokio::sync::RwLock;
 
 use super::*;
-use crate::cloud::Metadata;
 use crate::ctrl::vm::Progress;
 use crate::ctx::Context;
 use crate::model::{Instance, Subnet};
@@ -86,14 +85,7 @@ pub async fn new_instance(
         };
 
         // generate cloud-init data
-        let ci_meta = {
-            let m = Metadata::new(&args.name).ssh_pubkeys(&args.ssh_keys);
-            serde_yaml::to_string(&m)
-                .map_err(|err| cmd_error!("Couldn't generate cloud-init metadata: {err}"))
-        }?;
-
-        let db_inst =
-            Instance::insert(&ctx, &args.name, &subnet, lease.clone(), ci_meta, None).await?;
+        let db_inst = Instance::insert(&ctx, &args.name, &subnet, lease.clone(), None).await?;
 
         progress!(prog_task, 30.0, "Creating instance images...");
         // create primary volume from base image
diff --git a/nzrd/src/ctx.rs b/nzrd/src/ctx.rs
index 59f9e24..e8c77cb 100644
--- a/nzrd/src/ctx.rs
+++ b/nzrd/src/ctx.rs
@@ -12,6 +12,10 @@ use crate::dns::ZoneData;
 use nzr_api::config::Config;
 use std::sync::Arc;
 
+#[cfg(test)]
+pub(crate) const MIGRATIONS: EmbeddedMigrations = embed_migrations!("migrations");
+
+#[cfg(not(test))]
 const MIGRATIONS: EmbeddedMigrations = embed_migrations!("migrations");
 
 pub struct PoolRefs {
diff --git a/nzrd/src/main.rs b/nzrd/src/main.rs
index 6a5cef7..9482f41 100644
--- a/nzrd/src/main.rs
+++ b/nzrd/src/main.rs
@@ -1,19 +1,16 @@
-mod cloud;
 mod cmd;
 mod ctrl;
 mod ctx;
 mod dns;
 mod model;
 mod rpc;
-#[cfg(test)]
-mod test;
 
 use hickory_server::ServerFuture;
 use log::LevelFilter;
 use log::*;
 use model::{Instance, Subnet};
 use nzr_api::config;
-use std::str::FromStr;
+use std::{net::IpAddr, str::FromStr};
 use tokio::net::UdpSocket;
 
 #[tokio::main(flavor = "multi_thread")]
@@ -62,7 +59,10 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     // DNS init
     let mut dns_listener = ServerFuture::new(ctx.zones.catalog());
-    let dns_socket = UdpSocket::bind(ctx.config.dns.listen_addr.as_str()).await?;
+    let dns_socket = {
+        let dns_ip: IpAddr = ctx.config.dns.listen_addr.parse()?;
+        UdpSocket::bind((dns_ip, ctx.config.dns.port)).await?
+    };
     dns_listener.register_socket(dns_socket);
 
     tokio::select! {
diff --git a/nzrd/src/model/mod.rs b/nzrd/src/model/mod.rs
index e134da5..042cc73 100644
--- a/nzrd/src/model/mod.rs
+++ b/nzrd/src/model/mod.rs
@@ -1,5 +1,7 @@
 use std::{net::Ipv4Addr, str::FromStr};
 
+#[cfg(test)]
+mod test;
 pub mod tx;
 
 use diesel::{associations::HasTable, prelude::*};
@@ -33,7 +35,6 @@ diesel::table! {
         mac_addr -> Text,
         subnet_id -> Integer,
         host_num -> Integer,
-        ci_metadata -> Text,
         ci_userdata -> Nullable<Binary>,
     }
 }
@@ -71,7 +72,6 @@ pub struct Instance {
     pub mac_addr: MacAddr,
     pub subnet_id: i32,
     pub host_num: i32,
-    pub ci_metadata: String,
     pub ci_userdata: Option<Vec<u8>>,
 }
 
@@ -91,6 +91,17 @@ impl Instance {
         Ok(res)
     }
 
+    pub async fn get(ctx: &Context, id: i32) -> Result<Option<Self>, ModelError> {
+        ctx.spawn_db(move |mut db| {
+            self::instances::table
+                .find(id)
+                .load::<Instance>(&mut db)
+                .map(|m| m.into_iter().next())
+        })
+        .await?
+        .map_err(ModelError::Db)
+    }
+
     pub async fn all_in_subnet(ctx: &Context, net: &Subnet) -> Result<Vec<Self>, ModelError> {
         let subnet = net.clone();
 
@@ -122,6 +133,19 @@ impl Instance {
         Ok(res.into_iter().next())
     }
 
+    /// Gets an Instance model with the given MAC address.
+    pub async fn get_by_mac(ctx: &Context, addr: MacAddr) -> Result<Option<Self>, ModelError> {
+        ctx.spawn_db(move |mut db| {
+            use self::instances::dsl::{instances, mac_addr};
+            instances
+                .filter(mac_addr.eq(addr))
+                .select(Instance::as_select())
+                .load::<Instance>(&mut db)
+        })
+        .await?
+        .map_or_else(|e| Err(ModelError::Db(e)), |m| Ok(m.into_iter().next()))
+    }
+
     /// Gets an Instance model by the IPv4 address that has been assigned to it.
     pub async fn get_by_ip4(ctx: &Context, ip_addr: Ipv4Addr) -> Result<Option<Self>, ModelError> {
         use self::instances::dsl::host_num;
@@ -157,7 +181,6 @@ impl Instance {
         name: impl AsRef<str>,
         subnet: &Subnet,
         lease: nzr_api::model::Lease,
-        ci_meta: impl Into<String>,
         ci_user: Option<Vec<u8>>,
     ) -> Result<Self, ModelError> {
         // Get highest host addr + 1 for our addr
@@ -169,7 +192,6 @@ impl Instance {
 
         let wanted_name = name.as_ref().to_owned();
         let netid = subnet.id;
-        let ci_meta = ci_meta.into();
 
         if addr_num > subnet.end_host {
             Err(cidr::Error::HostBitsTooLarge)?;
@@ -184,7 +206,6 @@ impl Instance {
                     mac_addr.eq(lease.mac_addr),
                     subnet_id.eq(netid),
                     host_num.eq(addr_num),
-                    ci_metadata.eq(ci_meta),
                     ci_userdata.eq(ci_user),
                 );
 
diff --git a/nzrd/src/model/test.rs b/nzrd/src/model/test.rs
new file mode 100644
index 0000000..f0f1945
--- /dev/null
+++ b/nzrd/src/model/test.rs
@@ -0,0 +1,14 @@
+use diesel::Connection;
+use diesel_migrations::MigrationHarness;
+
+#[test]
+fn migrations() {
+    let mut sql = diesel::SqliteConnection::establish(":memory:").unwrap();
+    let pending = sql.pending_migrations(crate::ctx::MIGRATIONS).unwrap();
+    assert!(!pending.is_empty(), "No migrations found");
+    for migration in pending {
+        sql.run_migration(&migration).unwrap();
+    }
+
+    sql.revert_all_migrations(crate::ctx::MIGRATIONS).unwrap();
+}
diff --git a/nzrd/src/rpc.rs b/nzrd/src/rpc.rs
index 417516a..85e00e5 100644
--- a/nzrd/src/rpc.rs
+++ b/nzrd/src/rpc.rs
@@ -1,5 +1,5 @@
 use futures::{future, StreamExt};
-use nzr_api::{args, model, Nazrin};
+use nzr_api::{args, model, InstanceQuery, Nazrin};
 use std::sync::Arc;
 use tarpc::server::{BaseChannel, Channel};
 use tarpc::tokio_serde::formats::Bincode;
@@ -114,6 +114,27 @@ impl Nazrin for NzrServer {
         Ok(())
     }
 
+    async fn find_instance(
+        self,
+        _: tarpc::context::Context,
+        query: nzr_api::InstanceQuery,
+    ) -> Result<Option<model::Instance>, String> {
+        let res = match query {
+            InstanceQuery::Name(name) => Instance::get_by_name(&self.ctx, name).await,
+            InstanceQuery::MacAddr(addr) => Instance::get_by_mac(&self.ctx, addr).await,
+            InstanceQuery::Ipv4Addr(addr) => Instance::get_by_ip4(&self.ctx, addr).await,
+        }
+        .map_err(|e| e.to_string())?;
+
+        if let Some(inst) = res {
+            inst.api_model(&self.ctx)
+                .await
+                .map_or_else(|e| Err(e.to_string()), |m| Ok(Some(m)))
+        } else {
+            Ok(None)
+        }
+    }
+
     async fn get_instances(
         self,
         _: tarpc::context::Context,
@@ -216,6 +237,21 @@ impl Nazrin for NzrServer {
             .map_err(|e| e.to_string())?;
         Ok(())
     }
+
+    async fn get_instance_userdata(
+        self,
+        _: tarpc::context::Context,
+        id: i32,
+    ) -> Result<Vec<u8>, String> {
+        let Some(db_model) = Instance::get(&self.ctx, id)
+            .await
+            .map_err(|e| e.to_string())?
+        else {
+            return Err("Instance doesn't exist".to_owned());
+        };
+
+        Ok(db_model.ci_userdata.unwrap_or_default())
+    }
 }
 
 #[derive(Debug)]
diff --git a/nzrd/src/test.rs b/nzrd/src/test.rs
deleted file mode 100644
index a92d6df..0000000
--- a/nzrd/src/test.rs
+++ /dev/null
@@ -1,54 +0,0 @@
-use std::{net::Ipv4Addr, str::FromStr};
-
-use crate::cloud::*;
-use nzr_api::net::{cidr::CidrV4, mac::MacAddr};
-
-#[test]
-fn cloud_metadata() {
-    let expected = r#"
-instance-id: my-instance
-local-hostname: my-instance
-public-keys:
-- ssh-key 123456 admin@laptop
-"#
-    .trim_start();
-    let pubkeys = vec!["ssh-key 123456 admin@laptop".to_owned(), "".to_owned()];
-    let meta = Metadata::new("my-instance").ssh_pubkeys(&pubkeys);
-
-    let meta_xml = serde_yaml::to_string(&meta).unwrap();
-    assert_eq!(meta_xml, expected);
-}
-
-#[test]
-fn cloud_netdata() {
-    let expected = r#"
-version: 2
-ethernets:
-  eth0:
-    match:
-      macaddress: 02:15:42:0b:ee:01
-    addresses:
-    - 192.0.2.69/24
-    gateway4: 192.0.2.1
-    dhcp4: false
-    nameservers:
-      search: []
-      addresses:
-      - 192.0.2.1
-"#
-    .trim_start();
-    let mac_addr = MacAddr::new(0x02, 0x15, 0x42, 0x0b, 0xee, 0x01);
-    let cidr = CidrV4::from_str("192.0.2.69/24").unwrap();
-    let gateway = Ipv4Addr::from_str("192.0.2.1").unwrap();
-
-    let dns = vec![gateway];
-    let netconfig = NetworkMeta::new().static_nic(
-        EtherMatch::mac_addr(&mac_addr),
-        &cidr,
-        &gateway,
-        DNSMeta::with_addrs(None, &dns),
-    );
-
-    let net_xml = serde_yaml::to_string(&netconfig).unwrap();
-    assert_eq!(net_xml, expected);
-}