Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Tore Anderson
* Jean-Daniel Pauget > I confess using IPv6 behind a 6in4 tunnel because the "Business-Class" > service > of the concerned operator doesn't handle IPv6 yet. > > as such, I realised that, as far as I can figure, ICMPv6 packet "too-big" > (rfc 4443) > seem to be ignored or

Re: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread Fernando Gont
On 6/3/19 03:29, Mark Andrews wrote: > > >> On 6 Mar 2019, at 3:37 pm, Fernando Gont wrote: >> >> On 6/3/19 01:09, Mark Andrews wrote: >>> >>> On 6 Mar 2019, at 1:30 pm, Fernando Gont wrote: On 3/3/19 18:04, Mark Andrews wrote: > There are lots of IDIOTS out there that BLOCK

Re: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread Mark Andrews
> On 6 Mar 2019, at 3:37 pm, Fernando Gont wrote: > > On 6/3/19 01:09, Mark Andrews wrote: >> >> >>> On 6 Mar 2019, at 1:30 pm, Fernando Gont wrote: >>> >>> On 3/3/19 18:04, Mark Andrews wrote: There are lots of IDIOTS out there that BLOCK ALL ICMP. That blocks PTB getting

Re: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread Fernando Gont
On 6/3/19 01:09, Mark Andrews wrote: > > >> On 6 Mar 2019, at 1:30 pm, Fernando Gont wrote: >> >> On 3/3/19 18:04, Mark Andrews wrote: >>> There are lots of IDIOTS out there that BLOCK ALL ICMP. That blocks PTB >>> getting >>> back to the TCP servers. There are also IDIOTS that deploy load

Re: Arista Layer3

2019-03-05 Thread Colton Conor
How much do these boxes cost? On Tue, Mar 5, 2019 at 5:24 PM Kaiser, Erich wrote: > It would be worth your time to look at Extreme SLX9640 with advanced > routing license. > > > > On Tue, Mar 5, 2019 at 4:47 PM Roel Parijs wrote: > >> We have been using the 7280SR-48C6 for 2.5 years now. Just

Re: Comcast contact for wholesale ethernet/local loop

2019-03-05 Thread TJ Trout
Access to Comcast ethernet services on a wholesale level, interconnection for NNI to use comcast as local access, etc On Tue, Mar 5, 2019 at 9:01 PM Keith Christian wrote: > TJ, > > What are you seeking, exactly? > > Keith > > On Tue, Mar 5, 2019 at 7:46 PM TJ Trout wrote: > >> Does anyone

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Mark Andrews
> On 6 Mar 2019, at 1:36 pm, Fernando Gont wrote: > > On 5/3/19 03:26, Mark Andrews wrote: >> >> >>> On 5 Mar 2019, at 5:18 pm, Mark Tinka wrote: >>> >>> >>> >>> On 5/Mar/19 00:25, Mark Andrews wrote: >>> Then Cloudflare should negotiate MSS’s that don’t generate PTB’s if

Re: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread Mark Andrews
> On 6 Mar 2019, at 1:30 pm, Fernando Gont wrote: > > On 3/3/19 18:04, Mark Andrews wrote: >> There are lots of IDIOTS out there that BLOCK ALL ICMP. That blocks PTB >> getting >> back to the TCP servers. There are also IDIOTS that deploy load balancers >> that >> DO NOT LOOK INSIDE ICMP

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Fernando Gont
On 5/3/19 03:26, Mark Andrews wrote: > > >> On 5 Mar 2019, at 5:18 pm, Mark Tinka wrote: >> >> >> >> On 5/Mar/19 00:25, Mark Andrews wrote: >> >>> >>> Then Cloudflare should negotiate MSS’s that don’t generate PTB’s if >>> they have installed broken ECMP devices. The simplest way to do that

Comcast contact for wholesale ethernet/local loop

2019-03-05 Thread TJ Trout
Does anyone know the name, or have contact information for the department within Comcast that handles carriers looking to purchase local access, etc? Normally this would be the carrier or wholesale group, but either of their websites seem to be aligned to the services we are looking for? Thank

Re: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread Martin Hannigan
On Tue, Mar 5, 2019 at 07:15 Rich Kulawiec wrote: > On Mon, Mar 04, 2019 at 08:04:12AM +1100, Mark Andrews wrote: > > ICMP is NOT optional. > > I've pointed folks at this for years: > > ICMP Packet Filtering v1.2 > http://www.cymru.com/Documents/icmp-messages.html > > ---rsk >

Re: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread Fernando Gont
On 3/3/19 20:16, Mark Andrews wrote: > > >> On 4 Mar 2019, at 9:33 am, Stephen Satchell wrote: >> >> On 3/3/19 1:04 PM, Mark Andrews wrote: >>> There are lots of IDIOTS out there that BLOCK ALL ICMP. That blocks PTB >>> getting >>> back to the TCP servers. >> >> For those of us who are in the

Re: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread Fernando Gont
On 3/3/19 18:04, Mark Andrews wrote: > There are lots of IDIOTS out there that BLOCK ALL ICMP. That blocks PTB > getting > back to the TCP servers. There are also IDIOTS that deploy load balancers > that > DO NOT LOOK INSIDE ICMP messages for redirecting ICMP messages to the correct > back

Re: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread Fernando Gont
On 3/3/19 16:57, Jeroen Massar wrote: > On 2019-03-03 20:13, Mark Tinka wrote: >> >> >> On 3/Mar/19 18:05, Jeroen Massar wrote: >> >>> IPv6 requires a minimum MTU of 1280. >>> >>> If you cannot transport it, then the transport (the tunnel in this case) >>> needs to handle the fragmentation of

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Fernando Gont
On 27/2/19 07:01, Jean-Daniel Pauget wrote: > hello, > > I confess using IPv6 behind a 6in4 tunnel because the "Business-Class" > service > of the concerned operator doesn't handle IPv6 yet. > > as such, I realised that, as far as I can figure, ICMPv6 packet "too-big" > (rfc

Re: Best practices for BGP Communities

2019-03-05 Thread Job Snijders
On Wed, Mar 6, 2019 at 8:32 Smith, Courtney wrote: > On 3/5/19, 6:04 PM, "NANOG on behalf of Job Snijders" > j...@instituut.net> wrote: > > On Sun, Mar 03, 2019 at 08:42:02PM -0500, Joshua Miller wrote: > > A while back I read somewhere that transit providers shouldn't delete > >

Re: Best practices for BGP Communities

2019-03-05 Thread Smith, Courtney
On 3/5/19, 6:04 PM, "NANOG on behalf of Job Snijders" wrote: On Sun, Mar 03, 2019 at 08:42:02PM -0500, Joshua Miller wrote: > A while back I read somewhere that transit providers shouldn't delete > communities unless the communities have a specific impact to their > network, but

Re: Arista Layer3

2019-03-05 Thread Kaiser, Erich
It would be worth your time to look at Extreme SLX9640 with advanced routing license. On Tue, Mar 5, 2019 at 4:47 PM Roel Parijs wrote: > We have been using the 7280SR-48C6 for 2.5 years now. Just after Arista > announced the full table BGP routing. > Looking at the price / port there is

Re: Best practices for BGP Communities

2019-03-05 Thread Job Snijders
On Sun, Mar 03, 2019 at 08:42:02PM -0500, Joshua Miller wrote: > A while back I read somewhere that transit providers shouldn't delete > communities unless the communities have a specific impact to their > network, but my google-fu is failing me and I can't find any sources. > > Is this still the

RE: Internap Corporation - DDOS

2019-03-05 Thread Jerry Cloe
Don't forget, just because its the source IP in the packet doesn't mean thats where it originated from (its probably not). But, since it contains a consistent source IP, it should be fairly simple to filter it upstream.   -Original message- From:Tyler Harden Sent:Tue 03-05-2019 02:44 pm

Re: Arista Layer3

2019-03-05 Thread Roel Parijs
We have been using the 7280SR-48C6 for 2.5 years now. Just after Arista announced the full table BGP routing. Looking at the price / port there is nothing near Arista. We also use Cisco ASR1K and Juniper MX204 but these have far less capacity. When we first started, there were quite a few

Re: a quick survey about LLDP and similar

2019-03-05 Thread Hunter Fuller
On Fri, Mar 1, 2019 at 8:26 AM Anderson, Charles R wrote: > > We require LLDP/LLDP-MED to configure our VOIP phones. > > For trunk links, it is extremely helpful to verify correct topology. > > For datacenters, it is EXTREMELY helpful to verify hypervisor connectivity. I'd say it's extremely

Re: How to choose a transit provider?

2019-03-05 Thread Mehmet Akcin
thanks everyone watching the video, working on some more new ones. I am also working on a ranking system for transit providers. The way ranking will work is going to be limited to a Metro Do you guys have any recommendations what technical aspects to look for when ranking ISPs? it's quiet hard to

Internap Corporation - DDOS

2019-03-05 Thread Tyler Harden
Is anyone else being DDOS’d or flooded with traffic from Internap Corporation registered IP space? We’re on day 2 of consistent outages and the traffic I’m receiving is entirely from IPs in the /15 range 64.94.0.0-64.95.255.255 Cheers, Tyler Harden President exospec

Re: Arista Layer3

2019-03-05 Thread Dmitry Sherman
Thanks for info! -- Dmitry Sherman Interhost Networks Ltd dmi...@interhost.net Mobile: +972-54-3181182 Office: +972-74-7029881 Web: www.interhost.co.il On 05/03/2019, 21:26, "Saku Ytti" wrote: Hey Dmitry, > What do you think about Arista 7280SR (DCS-7280SR-48C6-M-R) as a BGP

Re: Arista Layer3

2019-03-05 Thread nanog
Check out the 7280sr2k, which is actually 24*10G, 24*25G, 6*100G On 03/05/2019 08:55 PM, David Hubbard wrote: > I love the NCS5501, but once Arista gets the 2M-route capacity down into the > 48x10g format, I'd jump ship in a heartbeat; currently you have to do a much > larger chassis-based

Re: Arista Layer3

2019-03-05 Thread David Hubbard
On 3/5/19, 2:28 PM, "NANOG on behalf of Saku Ytti" wrote: Hey Dmitry, > What do you think about Arista 7280SR (DCS-7280SR-48C6-M-R) as a BGP peering router with 3 x upstream with full route view in RIB (ipv4 + ipv6) and another IXP feed? > Considering switching from ASR9001

Re: Arista Layer3

2019-03-05 Thread Saku Ytti
Hey Dmitry, > What do you think about Arista 7280SR (DCS-7280SR-48C6-M-R) as a BGP peering > router with 3 x upstream with full route view in RIB (ipv4 + ipv6) and > another IXP feed? > Considering switching from ASR9001 which is doing perfect work but has no > more ports left. > The price is

Re: Arista Layer3

2019-03-05 Thread nanog
Those devices are awesome, I use those on the same usecase, and recommend them (I do not run pim, tho) On 03/05/2019 07:17 PM, Dmitry Sherman wrote: > Hello, > What do you think about Arista 7280SR (DCS-7280SR-48C6-M-R) as a BGP peering > router with 3 x upstream with full route view in RIB

Re: Arista Layer3

2019-03-05 Thread Dmitry Sherman
Hello, What do you think about Arista 7280SR (DCS-7280SR-48C6-M-R) as a BGP peering router with 3 x upstream with full route view in RIB (ipv4 + ipv6) and another IXP feed? Considering switching from ASR9001 which is doing perfect work but has no more ports left. The price is very competitive

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Hunter Fuller
On Tue, Mar 5, 2019 at 10:09 AM Bjørn Mork wrote: > Stephen Satchell writes: > > Did you submit a bug report? > > I believe this was fixed 5 years ago (in Linux v3.17): > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cb1ce2ef387b01686469487edd45994872d52d73 > >

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Bjørn Mork
Stephen Satchell writes: > On 3/5/19 2:54 AM, Thomas Bellman wrote: >> Out of curiosity, which operating systems put anything useful (for use >> in ECMP) into the flow label of IPv6 packets? At the moment, I only >> have access to CentOS 6 and CentOS 7 machines, and both of them set the >> flow

Looking for a Google contact

2019-03-05 Thread Jon Barnes
Can someone contact me off list about an issue.

Re: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread Saku Ytti
On Tue, Mar 5, 2019 at 4:54 PM wrote: > Let me play a devil's advocate here, the above statement begs a question > then, how do you know all that is harmful would you test for every possible > extension and hw/sw permutation? > So there would be 3 sets (though lines might be blurred) known

RE: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread adamv0025
> From: NANOG On Behalf Of Saku Ytti > > Hey Rich, > > > I've pointed folks at this for years: > > ICMP Packet Filtering v1.2 > > http://www.cymru.com/Documents/icmp-messages.html > > > To me, the correct pattern is here is to deny things you know to be harmful > and can

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Stephen Satchell
On 3/5/19 2:54 AM, Thomas Bellman wrote: > Out of curiosity, which operating systems put anything useful (for use > in ECMP) into the flow label of IPv6 packets? At the moment, I only > have access to CentOS 6 and CentOS 7 machines, and both of them set the > flow label to zero for all traffic.

Re: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread Saku Ytti
Hey Rich, > I've pointed folks at this for years: > ICMP Packet Filtering v1.2 > http://www.cymru.com/Documents/icmp-messages.html To me this seems anti-pattern. It seems it was written on basis of 'what we know we allow, what we don't know we deny'. With assumption that ICMP

Re: WIndows Updates Fail Via IPv6 - Update!

2019-03-05 Thread Rich Kulawiec
On Mon, Mar 04, 2019 at 08:04:12AM +1100, Mark Andrews wrote: > ICMP is NOT optional. I've pointed folks at this for years: ICMP Packet Filtering v1.2 http://www.cymru.com/Documents/icmp-messages.html ---rsk

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms,Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread sthaug
> Out of curiosity, which operating systems put anything useful (for use > in ECMP) into the flow label of IPv6 packets? At the moment, I only > have access to CentOS 6 and CentOS 7 machines, and both of them set the > flow label to zero for all traffic. FreeBSD 11.2-STABLE. Steinar Haug,

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Saku Ytti
On Tue, Mar 5, 2019 at 12:09 PM Joel Jaeggli wrote: > Parsing the icmp payload was something we considered in rfc7690 but wasn’t > one the approaches we pursued (we broadcasted the ptb to all hosts on the > segment(s) behind the load balancers in our original implementation). > > It actually

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Thomas Bellman
On 2019-03-05 07:26 CET, Mark Andrews wrote: > It does work as designed except when crap middleware is added. ECMP > should be using the flow label with IPv6. It has the advantage that > it works for non-0-offset fragments as well as 0-offset fragments and > also works for transports other than

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Joel Jaeggli
Sent from my iPhone > On Mar 5, 2019, at 01:31, Saku Ytti wrote: > >> On Tue, Mar 5, 2019 at 12:26 AM Mark Andrews wrote: >> >> Then Cloudflare should negotiate MSS’s that don’t generate PTB’s if >> they have installed broken ECMP devices. The simplest way to do that > > Out of curiosity

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Saku Ytti
On Tue, Mar 5, 2019 at 12:26 AM Mark Andrews wrote: > Then Cloudflare should negotiate MSS’s that don’t generate PTB’s if > they have installed broken ECMP devices. The simplest way to do that Out of curiosity does that imply you are aware of non-broken ECMP devices, which are able to hash on

Re: ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

2019-03-05 Thread Joel Jaeggli
Sent from my iPhone > On Mar 4, 2019, at 22:26, Mark Andrews wrote: > > > >> On 5 Mar 2019, at 5:18 pm, Mark Tinka wrote: >> >> >> >>> On 5/Mar/19 00:25, Mark Andrews wrote: >>> >>> >>> Then Cloudflare should negotiate MSS’s that don’t generate PTB’s if >>> they have installed broken