chore: run IPv6 compliance tests in CI

test/compliance.spec.ts

@@ -1,6 +1,7 @@
 import transportCompliance from '@libp2p/interface-compliance-tests/transport'
 import { QUICV1 } from '@multiformats/multiaddr-matcher'
 import { quic } from '../src/index.js'
+import { hostSupportsIpv6 } from './util.ts'
 
 describe('Interface compliance tests (IPv4)', () => {
   transportCompliance({
@@ -33,36 +34,38 @@ describe('Interface compliance tests (IPv4)', () => {
   })
 })
 
-// IPv6 isn't always available in CI
-if (!process.env.CI) {
-  describe('Interface compliance tests (IPv6)', function () {
-    transportCompliance({
-      async setup () {
-        const dialer = {
-          transports: [
-            quic()
-          ],
-          connectionMonitor: {
-            enabled: false
-          }
+describe('Interface compliance tests (IPv6)', function () {
+  if (!hostSupportsIpv6()) {
+    it.skip('Host does not support IPv6', () => {})
+    return
+  }
+
+  transportCompliance({
+    async setup () {
+      const dialer = {
+        transports: [
+          quic()
+        ],
+        connectionMonitor: {
+          enabled: false
         }
+      }
 
-        return {
-          dialer,
-          listener: {
-            addresses: {
-              listen: [
-                '/ip6/::/udp/0/quic-v1',
-                '/ip6/::/udp/0/quic-v1'
-              ]
-            },
-            ...dialer
+      return {
+        dialer,
+        listener: {
+          addresses: {
+            listen: [
+              '/ip6/::/udp/0/quic-v1',
+              '/ip6/::/udp/0/quic-v1'
+            ]
           },
-          dialMultiaddrMatcher: QUICV1,
-          listenMultiaddrMatcher: QUICV1
-        }
-      },
-      async teardown () {}
-    })
+          ...dialer
+        },
+        dialMultiaddrMatcher: QUICV1,
+        listenMultiaddrMatcher: QUICV1
+      }
+    },
+    async teardown () {}
   })
-}
+})

test/util.ts

@@ -1,10 +1,28 @@
 import { generateKeyPair } from '@libp2p/crypto/keys'
 import { defaultLogger } from '@libp2p/logger'
 import type { QuicComponents } from '../src/index.js'
+import { isIPv6 } from '@chainsafe/is-ip'
+import os from 'node:os'
 
 export async function createComponents (): Promise<QuicComponents> {
   return {
     privateKey: await generateKeyPair('Ed25519'),
     logger: defaultLogger()
   }
 }
+
+export function hostSupportsIpv6 (): boolean {
+  for (const interfaces of Object.values(os.networkInterfaces())) {
+    if (interfaces == null) {
+      continue
+    }
+
+    for (const info of interfaces) {
+      if (isIPv6(info.address)) {
+        return true
+      }
+    }
+  }
+
+  return false
+}