response.SetReply(req)
		response.Rcode = dns.RcodeServerFailure
		_ = w.WriteMsg(response)
		return
	}

	lp := h.lookupTable.Load()
	hostname := strings.ToLower(req.Question[0].Name)
	if lp == nil {
		if h.respondBeforeSync {
			response = h.upstream(proxy, req, hostname)
			response.Truncate(size(proxy.protocol, req))
			_ = w.WriteMsg(response)
		} else {

	return len(b), nil
}

func (c *UDPConn) writeToAddrPort(b []byte, addr netip.AddrPort) (int, error) {
	return c.writeTo(b, UDPAddrFromAddrPort(addr)) // TODO: optimize instead of allocating
}

func (c *UDPConn) writeMsg(b, oob []byte, addr *UDPAddr) (n, oobn int, err error) {
	return 0, 0, syscall.EPLAN9
}

func (c *UDPConn) writeMsgAddrPort(b, oob []byte, addr netip.AddrPort) (n, oobn int, err error) {
	return 0, 0, syscall.EPLAN9
}

			case dns.TypeANY:
				msg.Rcode = dns.RcodeRefused
			default:
				msg.Rcode = dns.RcodeNotImplemented
			}
		} else {
			msg.Rcode = dns.RcodeNameError
		}
	}
	if err := w.WriteMsg(msg); err != nil {
		scopes.Framework.Errorf("failed writing fake DNS response: %v", err)
	}
}

func (s *fakeDNSServer) setHosts(hosts sets.String) {
	s.mu.Lock()
	defer s.mu.Unlock()

// used to manipulate IP-level socket options in oob.
func (c *IPConn) WriteMsgIP(b, oob []byte, addr *IPAddr) (n, oobn int, err error) {
	if !c.ok() {
		return 0, 0, syscall.EINVAL
	}
	n, oobn, err = c.writeMsg(b, oob, addr)
	if err != nil {
		err = &OpError{Op: "write", Net: c.fd.net, Source: c.fd.laddr, Addr: addr.opAddr(), Err: err}
	}
	return
}

func newIPConn(fd *netFD) *IPConn { return &IPConn{conn{fd}} }

	})
	err = fd.eofError(n, err)
	if err == nil {
		rawToSockaddrInet6(o.rsa, sa6)
	}
	return n, int(o.msg.Control.Len), int(o.msg.Flags), err
}

// WriteMsg wraps the WSASendMsg network call.
func (fd *FD) WriteMsg(p []byte, oob []byte, sa syscall.Sockaddr) (int, int, error) {
	if len(p) > maxRW {
		return 0, 0, errors.New("packet is too large (only 1GB is allowed)")
	}

// write 1 byte to the connection.
func (c *UnixConn) WriteMsgUnix(b, oob []byte, addr *UnixAddr) (n, oobn int, err error) {
	if !c.ok() {
		return 0, 0, syscall.EINVAL
	}
	n, oobn, err = c.writeMsg(b, oob, addr)
	if err != nil {
		err = &OpError{Op: "write", Net: c.fd.net, Source: c.fd.laddr, Addr: addr.opAddr(), Err: err}
	}
	return
}

func newUnixConn(fd *netFD) *UnixConn { return &UnixConn{conn{fd}} }

// used to manipulate IP-level socket options in oob.
func (c *UDPConn) WriteMsgUDP(b, oob []byte, addr *UDPAddr) (n, oobn int, err error) {
	if !c.ok() {
		return 0, 0, syscall.EINVAL
	}
	n, oobn, err = c.writeMsg(b, oob, addr)
	if err != nil {
		err = &OpError{Op: "write", Net: c.fd.net, Source: c.fd.laddr, Addr: addr.opAddr(), Err: err}
	}
	return
}

	utilfeature "k8s.io/apiserver/pkg/util/feature"
	"k8s.io/apiserver/pkg/util/flushwriter"
	"k8s.io/component-base/tracing"
)

// StreamObject performs input stream negotiation from a ResourceStreamer and writes that to the response.
// If the client requests a websocket upgrade, negotiate for a websocket reader protocol (because many
// browser clients cannot easily handle binary streaming protocols).

	table [tableSize]uint32
}

// writeLSB writes the code c for "Least Significant Bits first" data.
func (w *Writer) writeLSB(c uint32) error {
	w.bits |= c << w.nBits
	w.nBits += w.width
	for w.nBits >= 8 {
		if err := w.w.WriteByte(uint8(w.bits)); err != nil {
			return err
		}
		w.bits >>= 8
		w.nBits -= 8
	}
	return nil
}

// writeMSB writes the code c for "Most Significant Bits first" data.

}

// Encode reads from the reader, erasure-encodes the data and writes to the writers.
func (e *Erasure) Encode(ctx context.Context, src io.Reader, writers []io.Writer, buf []byte, quorum int) (total int64, err error) {
	writer := &multiWriter{
		writers:     writers,
		writeQuorum: quorum,
		errs:        make([]error, len(writers)),
	}

	for {
		var blocks [][]byte