switch v := addr.(type) {
			case *net.IPAddr:
				ip = v.IP
			case *net.IPNet:
				ip = v.IP
			default:
				continue
			}

			if cidr.Contains(ip) {
				addresses[ip.String()] = ip
			}
		}
	}

	ips := make([]net.IP, 0, len(addresses))
	for _, ip := range addresses {
		ips = append(ips, ip)
	}

	return ips, nil
}

			return &OpError{Op: "set", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err}
		}
		if err := setKeepAliveInterval(c.fd, config.Interval); err != nil {
			return &OpError{Op: "set", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err}
		}
		if err := setKeepAliveCount(c.fd, config.Count); err != nil {
			return &OpError{Op: "set", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err}
		}

	}

	return nil
}

// Addr - net.Listener interface compatible method returns net.Addr.  In case of multiple TCP listeners, it returns '0.0.0.0' as IP address.
func (listener *httpListener) Addr() (addr net.Addr) {
	addr = listener.listeners[0].Addr()
	if len(listener.listeners) == 1 {
		return addr
	}

	tcpAddr := addr.(*net.TCPAddr)
	if ip := net.ParseIP("0.0.0.0"); ip != nil {
		tcpAddr.IP = ip
	}

# not error out on the (unrelated) latest one.

go get example.net/a/p@v0.2.0

-- go.mod --
module example

go 1.15

require example.net/a v0.1.0

replace (
	example.net/a v0.1.0 => ./a1
	example.net/a v0.2.0 => ./a2
	example.net/a v0.3.0 => ./a1
)

-- a1/go.mod --
module example.net/a

go 1.15
-- a1/README --
package example.net/a/p does not exist at this version.

-- a2/go.mod --

	"math/big",
	"math/cmplx",
	"math/rand",
	"mime",
	"mime/multipart",
	"net",
	"net/http",
	"net/http/cgi",
	"net/http/cookiejar",
	"net/http/fcgi",
	"net/http/httptest",
	"net/http/httputil",
	"net/http/pprof",
	"net/mail",
	"net/rpc",
	"net/rpc/jsonrpc",
	"net/smtp",
	"net/textproto",
	"net/url",
	"os",
	"os/exec",
	"os/signal",
	"os/user",
	"path",

limitations under the License.
*/

package healthcheck

import (
	"net"
	"net/http"
)

// listener allows for testing of ServiceHealthServer and ProxierHealthServer.
type listener interface {
	// Listen is very much like net.Listen, except the first arg (network) is
	// fixed to be "tcp".
	Listen(addr string) (net.Listener, error)
}

func (r *Range) Restore(net *net.IPNet, data []byte) error {
	if !net.IP.Equal(r.net.IP) || net.Mask.String() != r.net.Mask.String() {
		return ErrMismatchedNetwork
	}
	snapshottable, ok := r.alloc.(allocator.Snapshottable)
	if !ok {
		return fmt.Errorf("not a snapshottable allocator")
	}
	if err := snapshottable.Restore(net.String(), data); err != nil {

pkg net/http, const MethodHead ideal-string
pkg net/http, const MethodOptions = "OPTIONS"
pkg net/http, const MethodOptions ideal-string
pkg net/http, const MethodPatch = "PATCH"
pkg net/http, const MethodPatch ideal-string
pkg net/http, const MethodPost = "POST"
pkg net/http, const MethodPost ideal-string
pkg net/http, const MethodPut = "PUT"
pkg net/http, const MethodPut ideal-string
pkg net/http, const MethodTrace = "TRACE"

limitations under the License.
*/

package util

import (
	"net"
)

// NetworkInterfacer defines an interface for several net library functions. Production
// code will forward to net library functions, and unit tests will override the methods
// for testing purposes.
type NetworkInterfacer interface {
	InterfaceAddrs() ([]net.Addr, error)
}

	if err != nil {
		f.Close()
		return nil, &OpError{Op: "announce", Net: net, Source: laddr, Addr: nil, Err: err}
	}
	laddr, err = readPlan9Addr(net, netdir+"/"+proto+"/"+name+"/local")
	if err != nil {
		f.Close()
		return nil, err
	}
	return newFD(proto, name, nil, f, nil, laddr, nil)
}

func (fd *netFD) netFD() (*netFD, error) {
	return newFD(fd.net, fd.n, fd.listen, fd.ctl, fd.data, fd.laddr, fd.raddr)
}