t.Skip("IPv4 is not supported")
	}

	closer := func(cs []*UDPConn) {
		for _, c := range cs {
			if c != nil {
				c.Close()
			}
		}
	}

	for _, ifi := range []*Interface{loopbackInterface(), nil} {
		// Note that multicast interface assignment by system
		// is not recommended because it usually relies on
		// routing stuff for finding out an appropriate
		// nexthop containing both network and link layer

	"runtime"
	"testing"
	"time"
)

func BenchmarkUDP6LinkLocalUnicast(b *testing.B) {
	testHookUninstaller.Do(uninstallTestHooks)

	if !supportsIPv6() {
		b.Skip("IPv6 is not supported")
	}
	ifi := loopbackInterface()
	if ifi == nil {
		b.Skip("loopback interface not found")
	}
	lla := ipv6LinkLocalUnicastAddr(ifi)
	if lla == "" {
		b.Skip("IPv6 link-local unicast address not found")
	}