return address;
      }
      checkArgument(
          address instanceof Inet6Address, "Unexpected state, scope should only appear for ipv6");
      Inet6Address v6Address = (Inet6Address) address;
      int interfaceIndex = tryParseDecimal(scope, 0, scope.length());
      if (interfaceIndex != -1) {
        return Inet6Address.getByAddress(
            v6Address.getHostAddress(), v6Address.getAddress(), interfaceIndex);

        return address;
      }
      checkArgument(
          address instanceof Inet6Address, "Unexpected state, scope should only appear for ipv6");
      Inet6Address v6Address = (Inet6Address) address;
      int interfaceIndex = tryParseDecimal(scope, 0, scope.length());
      if (interfaceIndex != -1) {
        return Inet6Address.getByAddress(
            v6Address.getHostAddress(), v6Address.getAddress(), interfaceIndex);

import assertk.assertThat
import assertk.assertions.hasMessage
import assertk.assertions.hasSize
import assertk.assertions.isEqualTo
import java.io.IOException
import java.net.Inet4Address
import java.net.Inet6Address
import java.net.InetAddress
import java.net.Socket
import java.util.concurrent.CountDownLatch
import java.util.concurrent.TimeUnit
import javax.net.SocketFactory
import kotlin.test.assertFailsWith