diff --git a/src/pkg/net/iprawsock_plan9.go b/src/pkg/net/iprawsock_plan9.go
index 3fd9dce05e4..58df607e3be 100644
--- a/src/pkg/net/iprawsock_plan9.go
+++ b/src/pkg/net/iprawsock_plan9.go
@@ -8,12 +8,28 @@ package net
 
 import (
 	"os"
+	"time"
 )
 
 // IPConn is the implementation of the Conn and PacketConn
 // interfaces for IP network connections.
 type IPConn bool
 
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *IPConn) SetDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *IPConn) SetReadDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *IPConn) SetWriteDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
 // Implementation of the Conn interface - see Conn for documentation.
 
 // Read implements the net.Conn Read method.
@@ -41,21 +57,6 @@ func (c *IPConn) RemoteAddr() Addr {
 	return nil
 }
 
-// SetTimeout implements the net.Conn SetTimeout method.
-func (c *IPConn) SetTimeout(nsec int64) error {
-	return os.EPLAN9
-}
-
-// SetReadTimeout implements the net.Conn SetReadTimeout method.
-func (c *IPConn) SetReadTimeout(nsec int64) error {
-	return os.EPLAN9
-}
-
-// SetWriteTimeout implements the net.Conn SetWriteTimeout method.
-func (c *IPConn) SetWriteTimeout(nsec int64) error {
-	return os.EPLAN9
-}
-
 // IP-specific methods.
 
 // ReadFrom implements the net.PacketConn ReadFrom method.
@@ -68,7 +69,7 @@ func (c *IPConn) ReadFrom(b []byte) (n int, addr Addr, err error) {
 //
 // WriteToIP can be made to time out and return
 // an error with Timeout() == true after a fixed time limit;
-// see SetTimeout and SetWriteTimeout.
+// see SetDeadline and SetWriteDeadline.
 // On packet-oriented connections, write timeouts are rare.
 func (c *IPConn) WriteToIP(b []byte, addr *IPAddr) (n int, err error) {
 	return 0, os.EPLAN9
diff --git a/src/pkg/net/ipsock_plan9.go b/src/pkg/net/ipsock_plan9.go
index 42fb408041a..09d8d6b4e04 100644
--- a/src/pkg/net/ipsock_plan9.go
+++ b/src/pkg/net/ipsock_plan9.go
@@ -10,6 +10,7 @@ import (
 	"errors"
 	"io"
 	"os"
+	"time"
 )
 
 // probeIPv6Stack returns two boolean values.  If the first boolean value is
@@ -156,27 +157,18 @@ func (c *plan9Conn) RemoteAddr() Addr {
 	return c.raddr
 }
 
-// SetTimeout implements the net.Conn SetTimeout method.
-func (c *plan9Conn) SetTimeout(nsec int64) error {
-	if !c.ok() {
-		return os.EINVAL
-	}
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *plan9Conn) SetDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
-// SetReadTimeout implements the net.Conn SetReadTimeout method.
-func (c *plan9Conn) SetReadTimeout(nsec int64) error {
-	if !c.ok() {
-		return os.EINVAL
-	}
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *plan9Conn) SetReadDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
-// SetWriteTimeout implements the net.Conn SetWriteTimeout method.
-func (c *plan9Conn) SetWriteTimeout(nsec int64) error {
-	if !c.ok() {
-		return os.EINVAL
-	}
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *plan9Conn) SetWriteDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
diff --git a/src/pkg/net/tcpsock_plan9.go b/src/pkg/net/tcpsock_plan9.go
index 69fae036144..288ec056ab0 100644
--- a/src/pkg/net/tcpsock_plan9.go
+++ b/src/pkg/net/tcpsock_plan9.go
@@ -8,6 +8,7 @@ package net
 
 import (
 	"os"
+	"time"
 )
 
 // TCPConn is an implementation of the Conn interface
@@ -16,6 +17,21 @@ type TCPConn struct {
 	plan9Conn
 }
 
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *TCPConn) SetDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *TCPConn) SetReadDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *TCPConn) SetWriteDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
 // CloseRead shuts down the reading side of the TCP connection.
 // Most callers should just use Close.
 func (c *TCPConn) CloseRead() error {
diff --git a/src/pkg/net/udpsock_plan9.go b/src/pkg/net/udpsock_plan9.go
index 60dec812289..246c9ad94b5 100644
--- a/src/pkg/net/udpsock_plan9.go
+++ b/src/pkg/net/udpsock_plan9.go
@@ -9,6 +9,7 @@ package net
 import (
 	"errors"
 	"os"
+	"time"
 )
 
 // UDPConn is the implementation of the Conn and PacketConn
@@ -17,6 +18,21 @@ type UDPConn struct {
 	plan9Conn
 }
 
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *UDPConn) SetDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *UDPConn) SetReadDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *UDPConn) SetWriteDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
 // UDP-specific methods.
 
 // ReadFromUDP reads a UDP packet from c, copying the payload into b.
@@ -24,7 +40,7 @@ type UDPConn struct {
 // that was on the packet.
 //
 // ReadFromUDP can be made to time out and return an error with Timeout() == true
-// after a fixed time limit; see SetTimeout and SetReadTimeout.
+// after a fixed time limit; see SetDeadline and SetReadDeadline.
 func (c *UDPConn) ReadFromUDP(b []byte) (n int, addr *UDPAddr, err error) {
 	if !c.ok() {
 		return 0, nil, os.EINVAL
@@ -62,7 +78,7 @@ func (c *UDPConn) ReadFrom(b []byte) (n int, addr Addr, err error) {
 //
 // WriteToUDP can be made to time out and return
 // an error with Timeout() == true after a fixed time limit;
-// see SetTimeout and SetWriteTimeout.
+// see SetDeadline and SetWriteDeadline.
 // On packet-oriented connections, write timeouts are rare.
 func (c *UDPConn) WriteToUDP(b []byte, addr *UDPAddr) (n int, err error) {
 	if !c.ok() {
diff --git a/src/pkg/net/unixsock_plan9.go b/src/pkg/net/unixsock_plan9.go
index ac502d1d76a..e8087d09a36 100644
--- a/src/pkg/net/unixsock_plan9.go
+++ b/src/pkg/net/unixsock_plan9.go
@@ -8,6 +8,7 @@ package net
 
 import (
 	"os"
+	"time"
 )
 
 // UnixConn is an implementation of the Conn interface
@@ -44,18 +45,18 @@ func (c *UnixConn) RemoteAddr() Addr {
 	return nil
 }
 
-// SetTimeout implements the net.Conn SetTimeout method.
-func (c *UnixConn) SetTimeout(nsec int64) error {
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *UnixConn) SetDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
-// SetReadTimeout implements the net.Conn SetReadTimeout method.
-func (c *UnixConn) SetReadTimeout(nsec int64) error {
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *UnixConn) SetReadDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
-// SetWriteTimeout implements the net.Conn SetWriteTimeout method.
-func (c *UnixConn) SetWriteTimeout(nsec int64) error {
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *UnixConn) SetWriteDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
diff --git a/src/pkg/net/unixsock_posix.go b/src/pkg/net/unixsock_posix.go
index 2f8ff19e7ff..c1bb90b60a7 100644
--- a/src/pkg/net/unixsock_posix.go
+++ b/src/pkg/net/unixsock_posix.go
@@ -387,7 +387,7 @@ func (l *UnixListener) Close() error {
 // Addr returns the listener's network address.
 func (l *UnixListener) Addr() Addr { return l.fd.laddr }
 
-// SetTimeout sets the deadline associated with the listener.
+// SetDeadline sets the deadline associated with the listener.
 // A zero time value disables the deadline.
 func (l *UnixListener) SetDeadline(t time.Time) (err error) {
 	if l == nil || l.fd == nil {