func TestAddrSubscribeWithOptionsIPv6(t *testing.T) {
	tearDown := setUpNetlinkTest(t)
	defer tearDown()

	ch := make(chan AddrUpdate, 5000)
	done := make(chan struct{})
	defer close(done)
	var lastError error
	defer func() {
		if lastError != nil {
			t.Fatalf("Fatal error received during subscription: %v", lastError)
		}
	}()
	if err := AddrSubscribeWithOptions(ch, done, AddrSubscribeOptions{
		ListExisting: false,
		ErrorCallback: func(err error) {
			lastError = err
		},
	}); err != nil {
		t.Fatal(err)
	}

	// Create a dummy interface to add IPs.
	dummy := &Dummy{
		LinkAttrs: LinkAttrs{Name: "dummy0"},
	}
	if err := LinkAdd(dummy); err != nil {
		t.Fatal(err)
	}
	defer LinkDel(dummy)

	var ipNets []*net.IPNet
	for i := 1; i <= 1000; i++ {
		ip, cidr, _ := net.ParseCIDR(fmt.Sprintf("2001:db8::%d/64", i))
		ipNet := &net.IPNet{IP: ip, Mask: cidr.Mask}
		if err := AddrAdd(dummy, &Addr{IPNet: ipNet}); err != nil {
			t.Fatalf("Failed to add address %s: %v", ipNet, err)
		}
		ipNets = append(ipNets, ipNet)
	}
	for _, ipNet := range ipNets {
		if !expectAddrUpdate(ch, true, ipNet.IP) {
			t.Fatalf("Add update for %v not received as expected", ipNet.IP)
		}
	}
	for _, ipNet := range ipNets {
		if err := AddrDel(dummy, &Addr{IPNet: ipNet}); err != nil {
			t.Fatalf("Failed to delete address %s: %v", ipNet, err)
		}
	}
	for _, ipNet := range ipNets {
		if !expectAddrUpdate(ch, false, ipNet.IP) {
			t.Fatalf("Del update for %v not received as expected", ipNet.IP)
		}
	}
}

# go test -count 10 -run TestAddrSubscribeWithOptionsIPv6 ./
ok      github.com/vishvananda/netlink  4.624s