Oh I do, just not to my workstation ;-)
-Original Message-
From: Joel Jaeggli [mailto:joe...@bogus.com]
Sent: 23 August 2010 16:48
To: Leigh Porter
Cc: valdis.kletni...@vt.edu; Joe Greco; na...@merit.edu
Subject: Re: BCP38 exceptions for RFC1918 space
On 8/23/10 2:31 AM, Leigh Porter
; Sent: 16 August 2010 14:27
> To: Joe Greco
> Cc: na...@merit.edu
> Subject: Re: BCP38 exceptions for RFC1918 space
>
> On Mon, 16 Aug 2010 06:50:00 CDT, Joe Greco said:
>
>>> What *possible* use case would require a 1918-sourced packet to be
>>> traversin
s.kletni...@vt.edu]
> Sent: 16 August 2010 14:27
> To: Joe Greco
> Cc: na...@merit.edu
> Subject: Re: BCP38 exceptions for RFC1918 space
>
> On Mon, 16 Aug 2010 06:50:00 CDT, Joe Greco said:
>
>>> What *possible* use case would require a 1918-sourced packet to be
&
I very often see 1918 space in ICMP responses. It's quite dumb.
-Original Message-
From: valdis.kletni...@vt.edu [mailto:valdis.kletni...@vt.edu]
Sent: 16 August 2010 14:27
To: Joe Greco
Cc: na...@merit.edu
Subject: Re: BCP38 exceptions for RFC1918 space
On Mon, 16 Aug 2010 06:50:0
On Mon, 16 Aug 2010 06:50:00 CDT, Joe Greco said:
> > What *possible* use case would require a 1918-sourced packet to be
> > traversing
> > the public internet? We're all waiting with bated breath to hear this one.
> > ;)
>
> It's great for showing in traceroutes who the heel is.
Like I said,
> > What does "originating" mean? Creating the packets? Or forwarding
> > them?
>
> Either way, there's no excuse.
>
> First off, remember that BCP38 and 1918 don't apply on your set of
> interconnected private networks, no matter how big a net it is. You want to
> filter between two of your p
On Sun, 15 Aug 2010 19:02:50 +0200, Florian Weimer said:
> * Valdis Kletnieks:
>
> > On Sun, 15 Aug 2010 18:46:49 +0200, Florian Weimer said:
> >
> >> > And that connection that's trying to use PMTU got established across the
> >> > commodity internet, how, exactly? ;)
> >>
> >> ICMP "fragmentati
Florian Weimer wrote:
> What's the current consensus on exempting private network space from
> source address validation? Is it recommended? Discouraged?
>
> (One argument in favor of exceptions is that it makes PMTUD work if
> transfer networks use private address space.)
>
>
IMHO, operators
On Mon, Aug 16, 2010 at 1:49 AM, Marco Hogewoning wrote:
> On 15 aug 2010, at 20:05, Randy Bush wrote:
>> rfc1918 packets are not supposed to reach the public internet. once you
>> start accommodating their doing so, the downward slope gets pretty steep
>> and does not end in a nice place.
>
> I
On 15 aug 2010, at 20:05, Randy Bush wrote:
>> What's the current consensus on exempting private network space from
>> source address validation? Is it recommended? Discouraged?
>>
>> (One argument in favor of exceptions is that it makes PMTUD work if
>> transfer networks use private address s
On 15/08/2010 18:02, Florian Weimer wrote:
* Valdis Kletnieks:
On Sun, 15 Aug 2010 18:46:49 +0200, Florian Weimer said:
And that connection that's trying to use PMTU got established across the
commodity internet, how, exactly? ;)
ICMP "fragmentation needed, but DF set" messages carry the a
> What's the current consensus on exempting private network space from
> source address validation? Is it recommended? Discouraged?
>
> (One argument in favor of exceptions is that it makes PMTUD work if
> transfer networks use private address space.)
and this is a good thing?
rfc1918 packet
* Michael J. Wise:
> On Aug 15, 2010, at 9:14 AM, Florian Weimer wrote:
>
>> What's the current consensus on exempting private network space from
>> source address validation?
>
> BCP38-land MUST *never* see RFC1918-space traffic. Ever.
> Unless you're using a border router as a NAT device, of cou
* Valdis Kletnieks:
> On Sun, 15 Aug 2010 18:46:49 +0200, Florian Weimer said:
>
>> > And that connection that's trying to use PMTU got established across the
>> > commodity internet, how, exactly? ;)
>>
>> ICMP "fragmentation needed, but DF set" messages carry the a addresses
>> of intermediate
On Sun, 15 Aug 2010 18:46:49 +0200, Florian Weimer said:
> > And that connection that's trying to use PMTU got established across the
> > commodity internet, how, exactly? ;)
>
> ICMP "fragmentation needed, but DF set" messages carry the a addresses
> of intermediate routers which generate them (
On Aug 15, 2010, at 9:14 AM, Florian Weimer wrote:
> What's the current consensus on exempting private network space from
> source address validation?
BCP38-land MUST *never* see RFC1918-space traffic. Ever.
Unless you're using a border router as a NAT device, of course
The only way your qu
* Valdis Kletnieks:
> On Sun, 15 Aug 2010 18:14:41 +0200, Florian Weimer said:
>> What's the current consensus on exempting private network space from
>> source address validation? Is it recommended? Discouraged?
>
> What you do on your internal networks and internal transit is your business.
>
On Sun, 15 Aug 2010 18:14:41 +0200, Florian Weimer said:
> What's the current consensus on exempting private network space from
> source address validation? Is it recommended? Discouraged?
What you do on your internal networks and internal transit is your business.
BCP38 talks about where you co
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