diff --git a/src/host/local-hm.ts b/src/host/local-hm.ts
index 99dad2e..f1dee15 100644
--- a/src/host/local-hm.ts
+++ b/src/host/local-hm.ts
@@ -179,6 +179,13 @@ export interface LocalHmConfig {
    * Override with `--hm-image` or `SPHERE_LOCAL_HM_IMAGE`.
    */
   readonly image?: string;
+  /**
+   * Sphere network to inject into the HM (`UNICITY_NETWORK`) so the
+   * HM inherits it into every tenant it spawns. Defaults to 'testnet'
+   * for backward compat; pass 'testnet2' to run tenants against the
+   * v2 gateway (Phase-6 UXF fork).
+   */
+  readonly network?: string;
   /**
    * Health-port to expose on `127.0.0.1`. The HM listens on 9401
    * internally; we map each per-developer HM to a different host port
@@ -788,6 +795,7 @@ export async function ensureLocalHM(config: LocalHmConfig): Promise<LocalHmMetad
       managerPubkey: currentPubkey,
       managerDirectAddress: currentDirectAddress,
       tenantsHostDir: tenantsDir,
+      network: config.network ?? process.env['SPHERE_LOCAL_HM_NETWORK'],
       healthPort,
     });
 
diff --git a/src/trader/spawn.ts b/src/trader/spawn.ts
index 2e50909..201b440 100644
--- a/src/trader/spawn.ts
+++ b/src/trader/spawn.ts
@@ -89,7 +89,7 @@ export interface TraderSpawnOptions {
    * Sphere network for both wallet sanity-check and the test-fund gate.
    * Defaults to whatever the wallet's `Sphere` instance reports.
    */
-  readonly network?: 'testnet' | 'mainnet' | 'dev';
+  readonly network?: 'testnet' | 'testnet2' | 'mainnet' | 'dev';
 }
 
 export interface TraderSpawnResult {
@@ -237,6 +237,7 @@ export async function spawnTrader(opts: TraderSpawnOptions): Promise<TraderSpawn
       baseDir,
       templatesFile: opts.templatesFile,
       image: opts.hmImage,
+      network,
       healthPort: opts.healthPort,
     });
 
diff --git a/src/trader/trader-commands.ts b/src/trader/trader-commands.ts
index 46b614a..e94a99d 100644
--- a/src/trader/trader-commands.ts
+++ b/src/trader/trader-commands.ts
@@ -77,7 +77,7 @@ interface TraderSpawnCliOpts {
   templatesFile?: string;
   healthPort?: string;
   image?: string;
-  network?: 'testnet' | 'mainnet' | 'dev';
+  network?: 'testnet' | 'testnet2' | 'mainnet' | 'dev';
 }
 
 interface TraderStopCliOpts {
@@ -614,7 +614,7 @@ export function createTraderCommand(): Command {
     .option('--hm-image <ref>', 'Override the local HM container image')
     .option('--templates-file <path>', 'Override templates.json mounted into the HM')
     .option('--health-port <port>', 'Override HM health-port host mapping (127.0.0.1:<port>)')
-    .option('--network <name>', 'Sphere network: testnet|mainnet|dev (default: testnet)')
+    .option('--network <name>', 'Sphere network: testnet|testnet2|mainnet|dev (default: testnet)')
     .action(async function (this: Command, opts: TraderSpawnCliOpts) {
       await handleSpawn(this, opts);
     });