<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On 23 November 2015 at 16:15, David Hughes <span dir="ltr"><<a href="mailto:david@hughes.com.au" target="_blank">david@hughes.com.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
Not sure APNIC is the starting point for this.  Team Cymru could be a good first point of reference.<br>
<br>
        <a href="https://www.cymru.com/Documents/icmp-messages.html" rel="noreferrer" target="_blank">https://www.cymru.com/Documents/icmp-messages.html</a><br></blockquote><div><br></div><div>This is a very good starting point.</div><div><br></div><div><br></div><div><br></div><div> </div></div></div></div>