nanog mailing list archives
Re: ipv6 question
From: ann kok <oiyankok () yahoo ca>
Date: Fri, 11 Mar 2011 11:15:36 -0800 (PST)
Hi Then I won't use this ipv6 address 2001:db8:cafe:1111::12 for test Acutually, I have one in eth0 when I run ifconfig -a inet6 addr: fe80::20c:29ff:fe3c:92a1/64 Scope:Link but I also can't ping it ping6 fe80::20c:29ff:fe3c:92a1 connect: Invalid argument but ping6 ::1 is fine ping6 ::1 PING ::1(::1) 56 data bytes 64 bytes from ::1: icmp_seq=0 ttl=64 time=7.18 ms 64 bytes from ::1: icmp_seq=1 ttl=64 time=0.050 ms --- On Wed, 3/9/11, Karl Auer <kauer () biplane com au> wrote:
From: Karl Auer <kauer () biplane com au> Subject: Re: ipv6 question To: nanog () nanog org Received: Wednesday, March 9, 2011, 11:11 PM On Thu, 2011-03-10 at 11:43 +1100, Mark Andrews wrote:In message <1299711449.2109.98.camel@karl>, KarlAuer writes:On Wed, 2011-03-09 at 09:01 -0600, imNetAdministrator wrote:Where are you pinging it from? also, the2001:db8::/32 prefix is usedfor "documentation purposes" and might behandled differently by theTCP/IP stack.Works fine in Linux - I've been using it (in anisolated training roomsetup) for years. Regards, K.It is not a good idea to use the documentation prefixfor anythingother than documentation. How hard is it togenerate a ULA and useit?I suppose I took/take the view that it *is*, in a sense, being used for documentation. The network is a training network, isolated from the Internet, and used for demonstration purposes. It's a good way to engrave the doco prefix in the students' minds. It also allows all the slides, exercises and other documentation to use the documentation prefix and yet directly match the demonstration network. ULA prefixes have little internal logic and are hard to remember. Not a problem in production, but just another barrier in a training environment. "2001:db8::/32" is very easy to remember (I guess that's the point) and easy to add easy-to-use subnets into. However, I do appreciate that it's a bit of an edge case. In my training I specifically draw the students' attention to this fact. Thanks, K. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Karl Auer (kauer () biplane com au) +61-2-64957160 (h) http://www.biplane.com.au/kauer/ +61-428-957160 (mob) GPG fingerprint: DA41 51B1 1481 16E1 F7E2 B2E9 3007 14ED 5736 F687 Old fingerprint: B386 7819 B227 2961 8301 C5A9 2EBC 754B CD97 0156
Current thread:
- ipv6 question ann kok (Mar 09)
- Re: ipv6 question imNet Administrator (Mar 09)
- Re: ipv6 question Karl Auer (Mar 09)
- Re: ipv6 question Mark Andrews (Mar 09)
- Re: ipv6 question Karl Auer (Mar 09)
- <Possible follow-ups>
- Re: ipv6 question Karl Auer (Mar 09)
- Re: ipv6 question ann kok (Mar 11)
- Re: ipv6 question Valdis . Kletnieks (Mar 11)
- Re: ipv6 question ann kok (Mar 11)
- Re: ipv6 question Jason Bertoch (Mar 11)
- Re: ipv6 question ann kok (Mar 11)
- Re: ipv6 question Jason Bertoch (Mar 11)
- Re: ipv6 question ann kok (Mar 11)
- Re: ipv6 question Jason Bertoch (Mar 11)
- Re: ipv6 question ann kok (Mar 11)
- Re: ipv6 question imNet Administrator (Mar 09)