diff --git a/pkg/eni/local.go b/pkg/eni/local.go
index 9eae21cc..2540efe3 100644
--- a/pkg/eni/local.go
+++ b/pkg/eni/local.go
@@ -403,7 +403,7 @@ func (l *Local) Release(ctx context.Context, cni *daemon.CNI, request NetworkRes
 		log.Info("release ipv4", "ipv4", res.IP.IPv4)
 	}
 	if res.IP.IPv6.IsValid() {
-		l.ipv4.Release(cni.PodID, res.IP.IPv6)
+		l.ipv6.Release(cni.PodID, res.IP.IPv6)
 
 		log.Info("release ipv6", "ipv6", res.IP.IPv6)
 	}
diff --git a/pkg/eni/local_test.go b/pkg/eni/local_test.go
index a2fe5a6d..01b81141 100644
--- a/pkg/eni/local_test.go
+++ b/pkg/eni/local_test.go
@@ -83,3 +83,26 @@ func TestLocal_Release_DifferentENIID(t *testing.T) {
 
 	assert.False(t, local.Release(context.Background(), cni, request))
 }
+
+func TestLocal_Release_ValidIPv4_ReleaseIPv6(t *testing.T) {
+	local := NewLocalTest(&daemon.ENI{ID: "eni-1"}, nil, &types.PoolConfig{})
+	request := &LocalIPResource{
+		ENI: daemon.ENI{ID: "eni-1"},
+		IP:  types.IPSet2{IPv4: netip.MustParseAddr("192.0.2.1"), IPv6: netip.MustParseAddr("fd00:46dd:e::1")},
+	}
+	cni := &daemon.CNI{PodID: "pod-1"}
+
+	local.ipv4.Add(NewValidIP(netip.MustParseAddr("192.0.2.1"), false))
+	local.ipv4[netip.MustParseAddr("192.0.2.1")].Allocate("pod-1")
+
+	local.ipv6.Add(NewValidIP(netip.MustParseAddr("fd00:46dd:e::1"), false))
+	local.ipv6[netip.MustParseAddr("fd00:46dd:e::1")].Allocate("pod-1")
+
+	assert.True(t, local.Release(context.Background(), cni, request))
+
+	assert.Equal(t, ipStatusValid, local.ipv4[netip.MustParseAddr("192.0.2.1")].status)
+	assert.Equal(t, "", local.ipv4[netip.MustParseAddr("192.0.2.1")].podID)
+
+	assert.Equal(t, ipStatusValid, local.ipv6[netip.MustParseAddr("fd00:46dd:e::1")].status)
+	assert.Equal(t, "", local.ipv6[netip.MustParseAddr("fd00:46dd:e::1")].podID)
+}