nanog mailing list archives

Re: using "reserved" IPv6 space


From: -Hammer- <bhmccie () gmail com>
Date: Mon, 16 Jul 2012 10:11:48 -0500

There are multiple issues here. I understand most folks on these threads are beyond me but I'm pretty sure I'm not the only person in this position.

1) (This one is currently a personal issue) I am still building up a true IPv6 skillset. Yes, I understand it for the most part but now is the time to apply it.

2) All the reading you do doesn't prepare you for application and the vendors aren't necessarily helping. Feature parity across platforms and vendors beyond just "interface x/x/x" and "ipv6 address fe80:blah:blah::babe:1" seems to seriously be lacking. When I try to take what I understand and apply it beyond the basics I often see hurdles. Example? HSRP IPv6 global addressing on Cisco ASR platform. If it's working for you hit me offline. Example2? Any vendor product beyond a router or switch. CheckPoint FW? F5 LB? Netscaler LB or AF? The WAN guys may be rolling deep in IPv6 but not everyone else. I just got an EA this morning from CheckPoint for NAT66. This should have been ready for prime time years ago. I guess the vendors weren't getting the push from the customers so there was no need to make an effort....

3) When I'm not preoccupied attempting to digest the fundamentals I am well aware of the retooling of the brain that is required for this in a network design. Last year I reached out to Team Cymru and attempted to build an IPv6 router template to match their IPv4 template. It was a completely different animal. Ironically most of the STIGs and NSA reference garbage I used was ten years old but still applied. After going thru all those docs my brain hurt trying to orient my ACLs properly and go thru all the different attributes you want to block where and when. Then I spent some time trying to work our design schemas for our ARIN space with the WAN design team. What I'm trying to say is that Roberts comments are spot on. It is a very different way of thinking on a small scale and a large scale and you can't take your IPv4 logic and apply it. I've tried and it's just slowing me down.


-Hammer-

"I was a normal American nerd"
-Jack Herer

On 7/15/2012 10:35 PM, Lee wrote:
On 7/14/12, Robert E. Seastrom <rs () seastrom com> wrote:
Actually, that's one of the most insightful meta-points I've seen on
NANOG in a long time.

There is a HUGE difference between IPv4 and IPv6 thinking.  We've all
been living in an austerity regime for so long that we've completely
forgotten how to leave parsimony behind.  Even those of us who worked
at companies that were summarily handed a Class B when we mumbled
something about "internal subnetting" have a really hard time
remembering how to act when we suddenly don't have to answer for every
single host address and can design a network to conserve other things
(like our brain cells).
Suggestions?

I feel like I should be able to do something really nice with an
absurdly large address space.  But lack of imagination or whatever.. I
haven't come up with anything that really appeals to me.

Thanks,
Lee


-Hammer- <bhmccie () gmail com> writes:

<bashes head against wall>

Thank you all. It's not the protocol that hurts. It's rethinking the
culture/philosophy around it.

-Hammer-

On 7/14/12 3:20 PM, "Owen DeLong" <owen () delong com> wrote:

They're a bad thing in IPv6.

The only place for security through obscurity IMHO is a small round
container that sits next to my desk.

Besides, if you don't advertise it, a GUA prefix is just as obscure as a
ULA prefix and provides a larger search space in which one has to hunt
for it... Think /3 instead of /8.

Owen

On Jul 14, 2012, at 1:14 PM, -Hammer- wrote:

Guys,
    The whole purpose of this is that they do NOT need to be global.
Security thru obscurity. It actually has a place in some worlds. Does
that
make sense? Or are such V4-centric approaches a bad thing in v6?

On 7/13/12 8:41 PM, "Brandon Ross" <bross () pobox com> wrote:

On Fri, 13 Jul 2012, Owen DeLong wrote:

On Jul 13, 2012, at 4:24 PM, Randy Bush wrote:

keep life simple.  use global ipv6 space.

randy
Though it is rare, this is one time when I absolutely agree with
Randy.
It's even more rare for me to agree with Randy AND Owen at the same
time.

--
Brandon Ross                                      Yahoo & AIM:
BrandonNRoss
+1-404-635-6667                                                ICQ:
2269442
Schedule a meeting:  https://tungle.me/bross             Skype:
brandonross







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