WIP2

packages/system/virt/src/hostcheck/mod.rs

@@ -140,10 +140,53 @@ pub fn host_check_deps() -> Result<HostCheckReport, HostCheckError> {
             let _ = fs::remove_file(&probe_path);
         }
     }
-
+ 
+    // Optional Mycelium IPv6 checks when enabled via env
+    let ipv6_env = std::env::var("HERO_VIRT_IPV6_ENABLE").unwrap_or_else(|_| "".into());
+    let ipv6_enabled = ipv6_env.eq_ignore_ascii_case("1") || ipv6_env.eq_ignore_ascii_case("true");
+    if ipv6_enabled {
+        // Require mycelium CLI
+        if bin_missing("mycelium") {
+            critical.push("mycelium CLI not found on PATH (required when HERO_VIRT_IPV6_ENABLE=true)".into());
+        }
+        // Validate interface presence and global IPv6
+        let ifname = std::env::var("HERO_VIRT_MYCELIUM_IF").unwrap_or_else(|_| "mycelium".into());
+        let check_if = sal_process::run(&format!("ip -6 addr show dev {}", ifname))
+            .silent(true)
+            .die(false)
+            .execute();
+        match check_if {
+            Ok(r) if r.success => {
+                let out = r.stdout;
+                if !(out.contains("inet6") && out.contains("scope global")) {
+                    notes.push(format!(
+                        "iface '{}' present but no global IPv6 detected; Mycelium may not be up yet",
+                        ifname
+                    ));
+                }
+            }
+            _ => {
+                critical.push(format!(
+                    "iface '{}' not found or no IPv6; ensure Mycelium is running",
+                    ifname
+                ));
+            }
+        }
+        // Best-effort: parse `mycelium inspect` for Address
+        let insp = sal_process::run("mycelium inspect").silent(true).die(false).execute();
+        match insp {
+            Ok(res) if res.success && res.stdout.contains("Address:") => {
+                // good enough
+            }
+            _ => {
+                notes.push("`mycelium inspect` did not return an Address; IPv6 overlay may be unavailable".into());
+            }
+        }
+    }
+ 
     // Summarize ok flag
     let ok = critical.is_empty();
-
+ 
     Ok(HostCheckReport {
         ok,
         critical,