Fix the deprecationTime and expirationTime of delegated IPv6 link address.

Preferred/valid lifetime in the IA Prefix option is in unit of seconds,
covert it to milliseconds when populating the deprecationTime and
expirationTime for delegated IPv6 link address.

Bug: 129660498
Test: atest NetworkStackIntegrationTests
Change-Id: I764a63f85896ff509feb09e51564cd95209701d7

src/android/net/ip/IpClient.java

diff --git a/src/android/net/ip/IpClient.java b/src/android/net/ip/IpClient.java
index f01f505..7beca2d 100644
--- a/src/android/net/ip/IpClient.java
+++ b/src/android/net/ip/IpClient.java
@@ -3056,8 +3056,10 @@
                 @NonNull final IaPrefixOption ipo) {
             final int flags = IFA_F_NOPREFIXROUTE | IFA_F_MANAGETEMPADDR | IFA_F_NODAD;
             final long now = SystemClock.elapsedRealtime();
-            final long deprecationTime = now + ipo.preferred;
-            final long expirationTime = now + ipo.valid;
+            // Per RFC8415 section 21.22 the preferred/valid lifetime in IA Prefix option
+            // expressed in units of seconds.
+            final long deprecationTime = now + ipo.preferred * 1000;
+            final long expirationTime = now + ipo.valid * 1000;
             final LinkAddress la;
             try {
                 la = new LinkAddress(address, RFC7421_PREFIX_LENGTH, flags,

tests/integration/common/android/net/ip/IpClientIntegrationTestCommon.java

diff --git a/tests/integration/common/android/net/ip/IpClientIntegrationTestCommon.java b/tests/integration/common/android/net/ip/IpClientIntegrationTestCommon.java
index 7f4e852..2bbb879 100644
--- a/tests/integration/common/android/net/ip/IpClientIntegrationTestCommon.java
+++ b/tests/integration/common/android/net/ip/IpClientIntegrationTestCommon.java
@@ -4905,7 +4905,25 @@
         handleDhcp6Packets(prefix, true /* shouldReplyRapidCommit */);
         final ArgumentCaptor<LinkProperties> captor = ArgumentCaptor.forClass(LinkProperties.class);
         verify(mCb, timeout(TEST_TIMEOUT_MS)).onProvisioningSuccess(captor.capture());
-        assertTrue(hasIpv6AddressPrefixedWith(captor.getValue(), prefix));
+        final LinkProperties lp = captor.getValue();
+        assertTrue(hasIpv6AddressPrefixedWith(lp, prefix));
+
+        // Only run the test when the flag of parsing netlink events is enabled, where the
+        // deprecationTime and expirationTime is set.
+        if (mIsNetlinkEventParseEnabled) {
+            final long now = SystemClock.elapsedRealtime();
+            long when = 0;
+            for (LinkAddress la : lp.getLinkAddresses()) {
+                if (la.getAddress().isLinkLocalAddress()) {
+                    assertLinkAddressPermanentLifetime(la);
+                } else if (la.isGlobalPreferred()) {
+                    when = now + 4500 * 1000; // preferred=4500s
+                    assertLinkAddressDeprecationTime(la, when);
+                    when = now + 7200 * 1000; // valid=7200s
+                    assertLinkAddressExpirationTime(la, when);
+                }
+            }
+        }
     }
 
     @Test