From 6e2cb00008cbf09e556b00f87603797fcaa47e09 Mon Sep 17 00:00:00 2001
From: Christopher Speller <crspeller@gmail.com>
Date: Mon, 16 Apr 2018 05:37:14 -0700
Subject: Depenancy upgrades and movign to dep. (#8630)

---
 vendor/golang.org/x/net/icmp/extension.go | 89 -------------------------------
 1 file changed, 89 deletions(-)
 delete mode 100644 vendor/golang.org/x/net/icmp/extension.go

(limited to 'vendor/golang.org/x/net/icmp/extension.go')

diff --git a/vendor/golang.org/x/net/icmp/extension.go b/vendor/golang.org/x/net/icmp/extension.go
deleted file mode 100644
index 402a7514b..000000000
--- a/vendor/golang.org/x/net/icmp/extension.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2015 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.
-
-package icmp
-
-import "encoding/binary"
-
-// An Extension represents an ICMP extension.
-type Extension interface {
-	// Len returns the length of ICMP extension.
-	// Proto must be either the ICMPv4 or ICMPv6 protocol number.
-	Len(proto int) int
-
-	// Marshal returns the binary encoding of ICMP extension.
-	// Proto must be either the ICMPv4 or ICMPv6 protocol number.
-	Marshal(proto int) ([]byte, error)
-}
-
-const extensionVersion = 2
-
-func validExtensionHeader(b []byte) bool {
-	v := int(b[0]&0xf0) >> 4
-	s := binary.BigEndian.Uint16(b[2:4])
-	if s != 0 {
-		s = checksum(b)
-	}
-	if v != extensionVersion || s != 0 {
-		return false
-	}
-	return true
-}
-
-// parseExtensions parses b as a list of ICMP extensions.
-// The length attribute l must be the length attribute field in
-// received icmp messages.
-//
-// It will return a list of ICMP extensions and an adjusted length
-// attribute that represents the length of the padded original
-// datagram field. Otherwise, it returns an error.
-func parseExtensions(b []byte, l int) ([]Extension, int, error) {
-	// Still a lot of non-RFC 4884 compliant implementations are
-	// out there. Set the length attribute l to 128 when it looks
-	// inappropriate for backwards compatibility.
-	//
-	// A minimal extension at least requires 8 octets; 4 octets
-	// for an extension header, and 4 octets for a single object
-	// header.
-	//
-	// See RFC 4884 for further information.
-	if 128 > l || l+8 > len(b) {
-		l = 128
-	}
-	if l+8 > len(b) {
-		return nil, -1, errNoExtension
-	}
-	if !validExtensionHeader(b[l:]) {
-		if l == 128 {
-			return nil, -1, errNoExtension
-		}
-		l = 128
-		if !validExtensionHeader(b[l:]) {
-			return nil, -1, errNoExtension
-		}
-	}
-	var exts []Extension
-	for b = b[l+4:]; len(b) >= 4; {
-		ol := int(binary.BigEndian.Uint16(b[:2]))
-		if 4 > ol || ol > len(b) {
-			break
-		}
-		switch b[2] {
-		case classMPLSLabelStack:
-			ext, err := parseMPLSLabelStack(b[:ol])
-			if err != nil {
-				return nil, -1, err
-			}
-			exts = append(exts, ext)
-		case classInterfaceInfo:
-			ext, err := parseInterfaceInfo(b[:ol])
-			if err != nil {
-				return nil, -1, err
-			}
-			exts = append(exts, ext)
-		}
-		b = b[ol:]
-	}
-	return exts, l, nil
-}
-- 
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