vendor folder bump.

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

@@ -1,4 +1,4 @@
-// Copyright 2013 The Go Authors.  All rights reserved.
+// Copyright 2013 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -26,12 +26,12 @@ func (typ ICMPType) Protocol() int {
 // packets. The filter belongs to a packet delivery path on a host and
 // it cannot interact with forwarding packets or tunnel-outer packets.
 //
-// Note: RFC 2460 defines a reasonable role model and it works not
+// Note: RFC 8200 defines a reasonable role model and it works not
 // only for IPv6 but IPv4. A node means a device that implements IP.
 // A router means a node that forwards IP packets not explicitly
 // addressed to itself, and a host means a node that is not a router.
 type ICMPFilter struct {
-	sysICMPFilter
+	icmpFilter
 }
 
 // Accept accepts incoming ICMP packets including the type field value