Update dependencies

vendor/golang.org/x/net/ipv4/control_unix.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
 // +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
 
 package ipv4
@@ -11,6 +12,8 @@ import (
 
 	"golang.org/x/net/internal/iana"
 	"golang.org/x/net/internal/socket"
+
+	"golang.org/x/sys/unix"
 )
 
 func setControlMessage(c *socket.Conn, opt *rawOpt, cf ControlFlags, on bool) error {
@@ -64,7 +67,7 @@ func setControlMessage(c *socket.Conn, opt *rawOpt, cf ControlFlags, on bool) er
 
 func marshalTTL(b []byte, cm *ControlMessage) []byte {
 	m := socket.ControlMessage(b)
-	m.MarshalHeader(iana.ProtocolIP, sysIP_RECVTTL, 1)
+	m.MarshalHeader(iana.ProtocolIP, unix.IP_RECVTTL, 1)
 	return m.Next(1)
 }