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Level(3) DNS Spoofing All Domains
by Marshall, Quincy 19 Nov '19

19 Nov '19

This is mostly informational and may have already hit this group. My google-foo failed me if so. I discovered that the CenturyLink/Level(3) public DNS (4.2.2.2, etc) are spoofing all domains. If the hostname begins with a "w" and does not exist in the authoritative zone these hosts will return two Akamai hosts. [root@localhost ~]# dig +short w3.dummydomaindoesntexist.gov @4.2.2.2 23.202.231.167 23.217.138.108 [root@localhost ~]# dig +short w3.dummydomaindoesntexist.net @4.2.2.2 23.202.231.167 23.217.138.108 [root@localhost ~]# dig +short w3.dummydomaindoesntexist.com @4.2.2.2 23.202.231.167 23.217.138.108 [root@localhost ~]# dig +short w3.dummydomaindoesntexist.org @4.2.2.2 23.202.231.167 23.217.138.108 My apologies if this is old news. Lawrence Q. Marshall --------------------------------------------------------------------------------------- This email has been scanned for email related threats and delivered safely by Mimecast. For more information please visit http://www.mimecast.com ---------------------------------------------------------------------------------------

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Twitter Peering Contact
by Louis D 19 Nov '19

19 Nov '19

Hello Nanog, Does anyone here know a contact for Twitters peering group that is not from Peeringdb? I have been having issues the last several days first not receiving any routes and now the session failing. This is over the NYIIX peering if that helps at all. Any information is appreciated. Thank you, Louis D

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AT&T Security Contact
by Robert Webb 19 Nov '19

19 Nov '19

Apologies for the off topic email but I am trying to get in touch with someone at AT&T Security who has a clue. Received three text messages on my Verizon Wireless phone from my wife's number which were from AT&T with links to someone's tech visit ticket which gave me access to their services and tech appointment. Thanks..

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Dell OS10 switches
by Dmitry Sherman 19 Nov '19

19 Nov '19

Hello, Any recommendations about Dell S4200 switches with their OS10 Cisco like OS? Pricing is very attractive. They claim to support 1.5M bgp routes. Anyone has any experience with Dell’s switches? Can I rely on them in production network? Thanks Best regards, Dmitry Sherman [X]

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south bay ops channel
by Randy Bush 19 Nov '19

19 Nov '19

dear lazynet. is there a list, irc, slack, ... for ops in the southern bay area? need to find/discuss colo, hands, brains, ... thanks. randy

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OT: RE: Iran cuts 95% of Internet traffic
by Scott Weeks 18 Nov '19

18 Nov '19

--- tony(a)wicks.co.nz wrote: From: "Tony Wicks" <tony(a)wicks.co.nz> I guess all these governments who like to control... -------------------------------- The wierd thing to me is the one thing governments are afraid of is people talking to each other without restriction. Not this or that, rather just people talking freely. WTF... scott

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Re: TCP and anycast (was Re: ECN)
by Scott Weeks 17 Nov '19

17 Nov '19

--- randy(a)psg.com wrote: lots of good research lit on catchment topology of anycasted dns, which is very non-local. ----------------------------------- For the others here that didn't know what that is and are curious. I couldn't take it and just had to know... :) https://tools.ietf.org/html/rfc4786 Catchment: in physical geography, an area drained by a river, also known as a drainage basin. By analogy, as used in this document, the topological region of a network within which packets directed at an Anycast Address are routed to one particular node. scott

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ATT Mobile V6 / Central US Issues?
by Tom Beecher 16 Nov '19

16 Nov '19

Anyone from ATT aware of any V6 issues in your network , central US, ongoing for about 24 hours - ish? If so , offlist ping would be swell. Thanks!

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Re: Landing Stations used as datacenter
by Clayton Zekelman 15 Nov '19

15 Nov '19

Crosslake does not use the Enwave cooling pipes to enter 151 Front. Torix is at 151 Front, but 151 Front is not Torix. At 06:35 PM 15/11/2019, Andrew Paolucci via NANOG wrote: >Fresh water might not be in your scope for the >article, but I believe crosslakefibre.ca >operates a link across Lake Ontario, Buffalo to >Toronto at TORIX 151 Front Street, but you'd >need to verify with them if indeed the landing >comes directly into the facility, this may be >the case though as lake water is used for >cooling within the facility providing conduits already in place. > >Can't wait to read the article! > >Regards, >Andrew Paolucci > > > >âââââââ Original Message âââââââ >On Friday, November 15, 2019 6:20 PM, Javier J ><javier(a)advancedmachines.us> wrote: > >>I would think that just a few extra fractions >>of a second from the cable station to a DC/IX >>are better than a DC/IX near the beach where >>water can wipe it all out. Preferably DC/IX >>should be on the 2nd or third floor IMHO on some islands. >> >>- J >> >>On Fri, Nov 15, 2019 at 4:11 PM Owen DeLong >><<mailto:owen@delong.com>owen(a)delong.com> wrote: >>Some Caribbean islands had IXs in landing >>stations early on IIRC. Usually before the >>island built itâs first datacenter. >> >>Some of them were better/faster about moving to >>the datacenter once it was established than others. >> >>Owen >> >> >>>On Nov 15, 2019, at 01:47 , Martijn Schmidt >>>via NANOG <<mailto:nanog@nanog.org>nanog(a)nanog.org> wrote: >>> >>>I think AMS-IX had an exchange in Mombasa in >>>the SEACOM landing station at some point, but >>>that is gone now. I'm not sure about the exact >>>reasons there but someone here probably knows what happened. >>> >>>There's also a big amount of carriers in the >>>TATA landing station in Mumbai, it is the >>>second-largest in that market just behind GPX >>>in terms of carrier density at least according to PeeringDB. >>> >>>Best regards, >>>Martijn >>> >>> >>>On 11/15/19 3:58 AM, Mehmet Akcin wrote: >>>>Hey there >>>> >>>>I have been putting my thoughts on Infrapedia >>>>blog and sharing with folks like >>>> >>>><https://www.infrapedia.com/post/top20cities-datacenters>https://www.infrapedia.com/post/top20cities-datacenters >>>> >>>>I am working on a new article and this time >>>>my topic will be looking at cable landing >>>>stations(cls). Do you consider cable landing >>>>stations as a datacenter? Do you have any >>>>experience deploying a pop in CLS? Are you >>>>able to share (on or off record) your >>>>experience which I can refer as your >>>>experience (good or bad) why deploying a pop >>>>inside a CLS is good or bad idea. Any additional comments.. >>>> >>>>I am not a big fan of CLS deployments. They >>>>have limited networks ( like only carriers >>>>and no eyeballs) and very expensive connectivity (usually) >>>> >>>>Thank you in advance sharing your experience >>>> >>>>Mehmet >>>> >>>>-- >>>> >>>>Mehmet >>>>+1-424-298-1903 -- Clayton Zekelman Managed Network Systems Inc. (MNSi) 3363 Tecumseh Rd. E Windsor, Ontario N8W 1H4 tel. 519-985-8410 fax. 519-985-8409

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GeoIP issue with dvd.netflix.com
by Mark Thompson 15 Nov '19

15 Nov '19

Can anyone share a contact at Netflix who can help work through this? -- Mark Thompson (408) 202-1278

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