logger.FatalIf(err, "Unable to get IP addresses of this host")

	for _, interf := range ifs {
		addrs, err := interf.Addrs()
		if err != nil {
			continue
		}
		if runtime.GOOS == "windows" && interf.Flags&net.FlagUp == 0 {
			continue
		}

		for _, addr := range addrs {
			var ip net.IP
			switch v := addr.(type) {
			case *net.IPNet:
				ip = v.IP
			case *net.IPAddr:
				ip = v.IP
			}

			return nil, nil, errUnrecognized
		}
		var sloc []*Location
		addrs := make([]uint64, nstk)
		for i := 0; i < int(nstk); i++ {
			addrs[i], b = parse(b)
		}

		if count == 0 && nstk == 1 && addrs[0] == 0 {
			// End of data marker
			break
		}
		for i, addr := range addrs {
			if adjust && i > 0 {
				addr--
			}
			loc := locs[addr]
			if loc == nil {
				loc = &Location{
					Address: addr,

	for {
		var addr0, addr1 uintptr
		tp0, addr0 = tp0.next(addr + size)
		tp1, addr1 = tp1.next(addr + size)
		if addr0 != addr1 {
			failed = true
			break
		}
		if addr0 == 0 {
			break
		}
	}
	if failed {
		tp0 := s.typePointersOfType(typ, addr)
		tp1 := s.typePointersOf(addr, size)
		print("runtime: addr=", hex(addr), " size=", size, "\n")
		print("runtime: type=", toRType(typ).string(), "\n")

				},
			},
		},
		{
			`Group1: <addr1@example.com>;, Group 2: addr2@example.com;, John <addr3@example.com>`,
			[]*Address{
				{
					Name:    "",
					Address: "addr1@example.com",
				},
				{
					Name:    "",
					Address: "addr2@example.com",
				},
				{
					Name:    "John",
					Address: "addr3@example.com",
				},
			},
		},

	}))
	if _, err := cst.c.Head(cst.ts.URL); err != nil {
		t.Fatal(err)
	}

	host := cst.ts.Listener.Addr().String()
	got := <-ch
	if addr, ok := got.(net.Addr); !ok {
		t.Errorf("local addr value = %T; want net.Addr", got)
	} else if fmt.Sprint(addr) != host {
		t.Errorf("local addr = %v; want %v", addr, host)
	}
}

// https://golang.org/issue/15960

				}
			}
			if !found {
				return fmt.Errorf("unexpected address for endpoint %d: %v", i, addr)
			}
		}
	}
	return nil
}

func getLbEndpointAddrs(ep *endpointv3.LocalityLbEndpoints) []string {
	addrs := make([]string, 0)
	for _, lbEp := range ep.LbEndpoints {
		addrs = append(addrs, util.GetEndpointHost(lbEp))
	}
	return addrs

			ipsCp := make([]string, len(byName.addrs))
			copy(ipsCp, byName.addrs)
			return ipsCp, byName.canonicalName
		}
	}
	return nil, ""
}

// lookupStaticAddr looks up the hosts for the given address from /etc/hosts.
func lookupStaticAddr(addr string) []string {
	hosts.Lock()
	defer hosts.Unlock()
	readHosts()
	addr = parseLiteralIP(addr)
	if addr == "" {
		return nil
	}

			cidrs: []string{},
			itfAddrsPairs: []InterfaceAddrsPair{
				{
					itf:   net.Interface{Index: 0, MTU: 0, Name: "eth0", HardwareAddr: nil, Flags: 0},
					addrs: []net.Addr{&net.IPNet{IP: netutils.ParseIPSloppy("2001:db8::1"), Mask: net.CIDRMask(64, 128)}},
				},
				{
					itf:   net.Interface{Index: 1, MTU: 0, Name: "lo", HardwareAddr: nil, Flags: 0},

		if len(f) < 2 {
			continue
		}
		addr := f[1]
		if i := bytealg.IndexByteString(addr, '!'); i >= 0 {
			addr = addr[:i] // remove port
		}
		if ParseIP(addr) == nil {
			continue
		}
		// only return unique addresses
		for _, a := range addrs {
			if a == addr {
				continue loop
			}
		}
		addrs = append(addrs, addr)
	}
	return
}

// described in RFC 2782.
func (addrs byPriorityWeight) shuffleByWeight() {
	sum := 0
	for _, addr := range addrs {
		sum += int(addr.Weight)
	}
	for sum > 0 && len(addrs) > 1 {
		s := 0
		n := randIntn(sum)
		for i := range addrs {
			s += int(addrs[i].Weight)
			if s > n {
				if i > 0 {
					addrs[0], addrs[i] = addrs[i], addrs[0]
				}
				break
			}
		}