June 2021 - ripe-atlas - mailman.ripe.net

Requesting Credits for Research
by Alex Gamero-Garrido 29 Jul '23

29 Jul '23

Hi folks, My name is Alexander Gamero-Garrido and I'm a 5th year PhD student at CAIDA, UC San Diego. We're soon launching a large traceroute campaign for research and could use your generous donation of credits. We'll need about 150 million credits, but any partial amount that gets us closer to that goal is welcome and greatly appreciated. My account is agamerog at eng.ucsd.edu Thank you, Alex -- *Alex Gamero-Garrido* *PhD Student, Computer Science* Web: cseweb.ucsd.edu/~agamerog Center for Applied Internet Data Analysis (CAIDA) San Diego Supercomputer Center UC San Diego Pronouns: He/Him/His <https://inboxwhenready.org/?utm_campaign=signature&utm_medium=email&utm_sou…> I'm using Inbox When Ready <https://inboxwhenready.org/?utm_campaign=signature&utm_medium=email&utm_sou…> to protect my focus.

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Probe DHCPv6 support
by Aleksi Pirttimaa 19 May '23

19 May '23

Hi! I recently received my v4 probe and I'm very happy with it. But unfortunately it doesn't support DHCPv6. I present a practical reason for implementing a DHCPv6 client on the probe. You see, my ISP doesn't send router advertisements with the prefix for stateless autoconfiguration set, and instead DHCPv6 must be used. I believe their decision could have something to do with the fact that the regulating body here requires ISP's to prevent IP address spoofing in consumer plans. And to meet that requirement my ISP may be using a feature similar to Cisco's IP source guard, where switch ports and/or mac addresses are passively associated to leased ip's or prefixes, breaking SLAAC. Unfortunately they hate letting consumers talk with their engineers so it's difficult to speculate this further. For now, I've put a stateful firewall appliance in front of the probe which provides SLAAC, it works just fine. Do you think a DHCPv6 client should be implemented?

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Is there a procedure to move a software probe to a new device
by Peter Garner (iPad) 01 Feb '22

01 Feb '22

Noob question. I set up my software probe on a Debian 10 box which has quite a few small servers on it. However, I intend to move it onto a Raspberry Pi, so I was wondering if there's a specific procedure to follow to preserve existing settings? Only the internal IP address will change; the external remains the same.

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Is there a way to find the resolver used by the probe?
by pravicha 06 Jul '21

06 Jul '21

Hello, I’ve been trying to get dns measurements for a couple of domains over different regions using atlas probes. Is there a way to find the resolver’s IP used by the probes when use_probe_resolver is set to true? Thanks

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Resolves AAAA Correctly, Doesn't Resolve A - best way to resolve this?
by Peter T Garner 28 Jun '21

28 Jun '21

I've been having a few problems setting up my software probe, but this has now almost stabilised. It's been quite an education in DNS setup! My problem now is that my probe General Information is reporting "Resolves AAAA Correctly, Doesn't Resolve A, IPv4 Stable 1d, IPv4 Works, Software IPv4 RFC1918, IPv4 Capable" but I can't seem to fix the "Doesn't Resolve A" problem: is there anything specific that I can try from the command line to diagnose this? FWIW, all other traceroutes, pings, digs etc on the box seem to be working.

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IPv6-renew
by Marco Davids (IETF) 22 Jun '21

22 Jun '21

Hi, Whenever my network get's a different IPv6-prefix from my provider (which happens every now and then), the probe is flagged down in the dashboard. The reason seems to be that RIPE Atlas probes are unable to renew their (SLAAC?) IPv6-addresses when needed. Only solution is a powercycle. Is this a flaw, or is it by design? -- Marco

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Re: [atlas] IPv6-renew
by Nick Hilliard (INEX) 21 Jun '21

21 Jun '21

Ole Troan wrote on 21/06/2021 11:11: > To be correct; it's an operational issue. SLAAC works as designed with IPv6 renumbering. slaac - being stateless 'n all - was not designed with flash renumbering in mind because flash renumbering needs some degree of state synchronisation on all devices on the path between the provisioning system issuing the prefix and the end device. So in this sense it is a protocol issue, albeit an issue that was outside the design scope of the protocol. > Imagine if the mobile operator swapped your mobile phone number midstream. mobile phone numbers are stateful. You don't need to change phone number every time you're handed off to a different cell. Nick

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Is there a definitive guide to firewall rules?
by Peter Garner (iPad) 21 Jun '21

21 Jun '21

Noob question. I set up a software probe a couple of days ago on a Linux box that uses Universal FireWall (UFW). I've no problem with the required internal ports and the probe seems to be working as intended but would like to know if there's a definitive list of ports and protocols that I can apply to get the maximum benefit to the data?

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My probe (10047) is dead
by Ondrej.Flidr 18 Jun '21

18 Jun '21

Hi Ripe, it looks like my probe is dead. Connection on site is working but probe doesn't seems to be connected. There is flashing orange led on USB dongle. What should I do now? How can I debug it? Best regards, Ondrej Flidr

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