Root Access

Circus Cat

00:00

@Bertieb Turns out I was right, there were 10 prizes

bertieb

@CircusCat None of which I won D:

That Brazilian Guy

May 2 '17 at 3:45, by Bob

CONTAINER ID        IMAGE                 COMMAND                  CREATED             STATUS              PORTS                    NAMES
c5cf16a8430d        guacamole/guacamole   "/opt/guacamole/bin/s"   50 seconds ago      Up 30 seconds       0.0.0.0:8080->8080/tcp   guacamole
e7e54a1be366        postgres              "docker-entrypoint.sh"   16 minutes ago      Up 12 minutes       5432/tcp                 postgres
76e9eb952473        guacamole/guacd       "/usr/local/sbin/guac"   32 minutes ago      Up 31 minutes       4822/tcp                 guacd

May 2 '17 at 3:45, by Bob

\o/

bertieb

Circus Cat

@bertieb Me neither

Bob

@bwDraco yeaaaaaaa that doesn't help when your terminal is trapped inside

I'll probably have to revisit it for discourse sometime

That Brazilian Guy

00:02

@Bob Looks like you made it work? Or not?

Circus Cat

I bet nobody actually won and it's all a scam to steal everyone's personal details

bertieb

Ah well, hopefully smiley or some of the friends and family I ~~arm-twisted~~ suggested try it won one

Hah :P

Bob

@ThatBrazilianGuy I didn't say it never worked, just that the path was painful :P

allquixotic

gist.github.com/allquixotic/b9a31b2fff7bfb2f374ba6aee276866b

PRs welcome :D

That Brazilian Guy

@CircusCat Won what?

allquixotic

00:11

@ThatBrazilianGuy you can borrow mine! I've been practically trying to give it away

24 GB of RAM, 2 x Xeon L5630, 2 x 500 GB HDD, comes with Ubuntu 18.04 installed in software RAID-1 with a btrfs / volume

it's somewhereintheUS and has giagbit

bwDraco

@ThatBrazilianGuy allq has an unused server to lend out. I haven't found a use for it, but if you need one, go ahead and ask for it.

That Brazilian Guy

allquixotic

@ThatBrazilianGuy yes

@bwDraco hell, you guys can share, if you agree on a container/virt tech to use and stick with it (to avoid conflicts with bridges and such).... would recommend LXD because Bob and I can help with config

even if you don't intend to use it now, @ThatBrazilianGuy can configure it so that all his meaningful workloads go under LXD, so if you change your mind later and want a piece of the server, he can make a container for you

Bob

00:30

lol

@allquixotic's been offering a full dedi

I've been offering containers for years

allquixotic

@ThatBrazilianGuy either paste your SSH pubkey in here, or register on Matrix and join our channel and PM me... I probably need to PM you the IP address anyway.

Circus Cat

00:48

@ThatBrazilianGuy TWSS

That Brazilian Guy

@CircusCat Bad cat, don't hiss at me!

Bob

@bertieb *poke*

bertieb

Yea

Think something has gone screwy

allquixotic

darn, the only .wy TLD is .wy.us (Wyoming - probably official government stuff only, like .gov or .mil)

I was thinking scre.wy :D

That Brazilian Guy

@allquixotic I've sent you a FB message

allquixotic

00:58

facebook? wtf? are we on that?

also why would you use that instead of ..............

That Brazilian Guy

If you prefer, I can send you an email.

allquixotic

just... nevermind :) I replied

Bob

lol

we now have so many chat protocols @allquixotic's forgotten a few :P

Journeyman Geek

Lol

I actually had this one running the earliest

Bob

@JourneymanGeek for you superuser.com/questions/1324773/…

Please read through this unix.stackexchange.com/questions/399626/… and also we really don't recommend anyone using Kali Linux unless they know what they're doing. Beyond that, the answer provided is correct. — Darius 2 hours ago

thx. but in there....i cant find any answer for myself.. — danyal 40 mins ago

like... dude, did you miss the entire point of that post?

Journeyman Geek

01:04

Lol. For aibobot

bwDraco

02:14

...and my hosting provider has deployed AMD EPYC. That one definitely came from left field.

blog.linode.com/2018/05/17/…

Storage has been expanded on all plans, with larger instances getting more RAM and CPU as well.

That Brazilian Guy

Ping @allquixotic

bwDraco

They are still running older Xeons in their datacenters, though.

My main server got a Haswell Xeon; the other two got Broadwell. I wasn't lucky enough to get Naples on any of my servers.

Could be specific to the region, though.

All services are operating again as before, with no functional changes.

FreezePhoenix

o/

bwDraco

\o

That Brazilian Guy

/o

_o_

\o\

FreezePhoenix

02:28

\\o//

That Brazilian Guy

^---- I'm grabbing a pencil

FreezePhoenix

why?

@bwDraco how you been doing?

bwDraco

Very busy lately with housework.

That Brazilian Guy

Damn, my UPS was beeping every 15 seconds for nearly half an hour

Then it stopped for half an hour, and started again

And a red light labeled "building wiring fault" or something like that is on

FreezePhoenix

@allquixotic how do you make that table?

That Brazilian Guy

02:34

If I die it was nice knowing you guys

5

FreezePhoenix

Uh... Nice knowing you too.

bwDraco

> Prompto: Are we doomed? Pretty sure we're doomed.
Gladiolus: Was nice knowing you guys.

FreezePhoenix

Https://github.com/freezephoenix/XtraUtils can after anyone tell me why CoffeScript files don't show up in the languages list?

Bob

02:54

@ThatBrazilianGuy someone's probably having a shower

FreezePhoenix

Hey Bob.

Bob

4

Q: Is it breach of contract if dismissed before starting work?

I'll just preface the question by apologising if it's worded poorly or this is the wrong site for it. I've recently been put in quite a difficult situation and was wondering what legal options there are for someone in this position; I've been dismissed by a company I was due to start a job with,...

poor guy

FreezePhoenix

03:10

@Bob May we never forget him.

allquixotic

03:20

@FreezePhoenix stackedit.io/app#

FreezePhoenix

Cool... There's a lot about markdown I didn't know about...

Ave

@ThatBrazilianGuy saudades

Bob

03:46

github.com/grpc/grpc/blob/master/AUTHORS

Ave

oh hey grpc

someone on bridge works on it

allquixotic

I used it for kynnaugh-cc

hard to compile for Windows

@Ave someone's simultaneously a The Bridge chatter and a grpc contributor? like, a Googler?

oh is it Alexander Yee / Mysticial?

Ave

yes

it's murgatroid99 github.com/murgatroid99

allquixotic

huh.

Bob

sites.google.com/site/testsitehacking/…

exploiting google for fun and profit? :P

bwDraco

04:01

@allquixotic: first QLC NAND SSDs: tomshardware.com/news/micron-intel-nand-qlc-ssd,37086.html

As usual, new storage technology goes to the datacenter first, but only a matter of time before QLC reaches low-cost, high-capacity consumer SSDs.

I suspect such consumer QLC NAND SSDs would be marketed for read-mostly applications like games and media libraries.

allquixotic

@bwDraco the reduction in endurance per cell is probably somewhat made up for by having many more of them once you start getting into the 8 TB range (or at least cheaper 4 TB)

bwDraco

You still get 1,000 P/E cycles. 3D NAND technology has helped keep endurance sane.

allquixotic

with TLC 4 TB the endurance is high enough for common consumer workloads (where you're not wiping the entire drive every week, or even every month) that the general consensus is "you don't have to worry about endurance, period"

because the capacity is just so high, you have so many cells to work with

if QLC sacrifices some endurance for much reduced cost I'll still probably go for it... in high capacities

not ideal for a 256 GB system drive

bwDraco

Yup. It would not make sense for use as a boot drive unless it's at least 1 TB in size.

Journeyman Geek

\o/

got my new cheapie line

allquixotic

04:12

??

bwDraco

bhphotovideo.com/c/product/1368965-REG/…

Ideal monitor for photography work going forward?

(via tomshardware.com/reviews/best-professional-monitors,4612.html)

Ave

@bwDraco I'm not an expert but it looks good

bwDraco

Hard call, though. I'm not willing to throw that much money onto a monitor at this point.

Ave

oh wow, that's REALLY expensive

Journeyman Geek

@allquixotic 8 dollars a month....

1000 minutes talktime, 1000 texts, 1gb of unthrottled data, unlimited data throttled to some extent

but its a MVNO off the same telco I normally use, and I'll get shitty speeds at work anyway

bwDraco

04:18

Also, color management can be tricky. I'd prefer that all my games run on my primary monitor (for compatibility reasons), so I'd rather not have to reassign that. ~~Some~~ All of the color-managed programs I use are set up to rely on the "system" color profile, which may get confused if the program is running on something other than the primary monitor.

If I tell said color-managed programs to use a specific profile, they would have to be reconfigured every time a new profile is generated.

allquixotic

05:26

Yunnan Baiyao

Yunnan Baiyao (or Yunnan Paiyao; simplified Chinese: 云南白药; traditional Chinese: 雲南白藥; pinyin: Yúnnán Báiyào; literally: "Yunnan White Drug") is a hemostatic powdered medicine famous for being carried by the Vietcong to stop bleeding during the Vietnam War. The medicine, developed by Qu Huangzhang in 1902, is designated as one of two Class-1 protected traditional medicines, which gives it 20 years protection. In China, its reputation is equal to that of penicillin in the U.S. It is founded and manufactured by a state-owned enterprise, Yunnan Baiyao Group (SZSE: 000538) in Yunnan, China. ==...

that reads like an advertisement o_O

Ave

yeah exactly

bwDraco

05:59

@allquixotic Tagged accordingly.

Wow. Who knew the contents of a traditional medicine could be classified information?

Sathya

@Ave since you mentioned the other day ^^

Ave

ooh, congrats!

it's still 99.9k on chat, but I suppose that'll update soon

Sathya

06:29

thanks :D

djsmiley2k

06:56

@Sathya grats :)

djsmiley2k

07:24

sooooooo wtf is with chrome 'blocking' downloads

Sathya

@djsmiley2k thanks!

djsmiley2k

Michael Frank

08:40

@djsmiley2k Weird...

djsmiley2k

@MichaelFrank yeah

tho actually that's happening at work and I was remoted into work, should of tried it locally LOL

Michael Frank

My only guess is Chrome thinks the URL is malicious.

djsmiley2k

seems it maybe files with no extension.

djsmiley2k

08:52

Woooo 4k

Burgi

09:28

ffs

djsmiley2k

uhoh @Burgi's back

Burgi

FF is doing the same thing that chrome does when dealing with local .dev domains

djsmiley2k

that's because you never should of used them.

Burgi

:)

never use local domains?

djsmiley2k

.dev isn't local

.local .example and a few others are.

Burgi

09:30

.local is a TLD

i was taught to use .dev at the turn of century

djsmiley2k

trends.google.com/trends/explore?date=all&q=.dev

Was a thing in 2004.

hmmm

Burgi

its because google bought the TLD .dev

Google are scum and hate developers

> Google wants to use .dev for themselves.

Journeyman Geek

10:00

Anyone else seen this in the bottom of SU or other QA sites?

Burgi

yes

its part of GDPR

djsmiley2k

10:16

hmmm

I didn't think they could do automatic inclusion anymore

including 'by continuing you agree to x,y and z'

Maybe that's just for emails tho.

Burgi

its legitimate business use

although GDPR is a fracking mess there are provisions in it for BAU

djsmiley2k

lol yah

djsmiley2k

10:59

54.160.0.0/12 255.240.0.0
54.192.0.0/12 255.240.0.0
54.208.0.0/13 255.248.0.0
54.216.0.0/14 255.252.0.0
54.220.0.0/15 255.254.0.0
54.224.0.0/12 255.240.0.0
54.240.0.0/12 255.240.0.0

Who's good at subnetting?

Do me a favour, make that a single subnet ;D

@Burgi amuisingly I'm not seeing it :D

allquixotic

GDPR GDPR GDPR GDPR GDPR GDPR GDPR GDPR

And I don't even live in the EU

djsmiley2k

yup.

allquixotic

11:14

Hey, Europeans? GDPR! GDPR? Hmm, ya, GDPR GDPR GDPR GDPR. GDPR, GDPR GDPR GDPR. GDPR...

5

Burgi

you can thank us later

ideally in the latter part of 2019 when we can deny all knowledge and also blame europeans

djsmiley2k

LOL

Bob

@djsmiley2k 54.128.0.0/9?

Burgi

@Bob thats a lot of addresses

Bob

@Burgi that's what you get when you want to "make a single subnet" of a bunch of subnets with huge gaps in the middle

good luck actually buying a /9 though

Burgi

11:20

wouldn't 54.160.0.0/9 be a little better?

djsmiley2k

@Bob that may work

haha not buying anything, they all ec2 ranges

just looking to simplfy the firewall rule.

Burgi

knows nothing about subnetting

rahuldottech

Someone please explain to me why it's cool for the US to have nuclear weapons but not any other nation?

Bob

@Burgi ...that's the same range

Burgi

@Bob you had 128...

like i said i know nuffin'

Bob

11:22

@Burgi yes, because 54.128.0.0 is the network address

the /9 containing 54.160.0.0 is the 54.160.0.0/9 subnet

djsmiley2k

hmmm

this is where it gets confusing

Bob

you can't just randomly pick a "start" address

draw it out in binary bits and it might be more obvious

Burgi

you are going into deep networking that i don't understand

djsmiley2k

what bob said

Burgi

i've never done subnetting

Bob

11:23

with a /9 you have the subnet mask of 11111111 10000000 00000000 00000000

which means your network address can only have the first 9 bits

54.128.0.0 is 00110110 10000000 00000000 00000000

54.160.0.0 is 00110110 10100000 00000000 00000000

once you apply the mask (binary AND)...

  00110110 10100000 00000000 00000000
& 11111111 10000000 00000000 00000000
= 00110110 10000000 00000000 00000000

Burgi

ok its a little clearer

Boris_yo

@allquixotic GDPR in a nutshell?

Bob

another way of looking at it, with a /9 the last two octets of the network address must be 0. the second octet must be either a 0 or 128 (a 00000000 or 10000000)

any variation of the less significant bits are IP addresses inside a /9 subnet identified by the most significant 9 bits

@djsmiley2k if you want a range that covers all of them with no "gaps"...

djsmiley2k

I suspect the gaps maybe owned by amazon too

I'd just need to check

Bob

you can't really slim it down much

54.160.0.0/12
54.192.0.0/12
54.208.0.0/13
54.216.0.0/14
54.220.0.0/15
54.224.0.0/11

only the last two /12s can be aggregated

here, tehnoblog.org/ip-tools/ip-address-aggregator

Burgi

11:32

@djsmiley2k are you in charge of blocking AWS for the russian government?

djsmiley2k

;)

Journeyman Geek

12:27

@Bob turns out the connection off the myrepublic sim is... better.

which... makes no sense since its a MVNO of the other phone company I yse

Journeyman Geek

13:19

@rahuldottech more or less they had em first

That Brazilian Guy

Ok, looks like I managed to kill @allq's server with a single command.

Literally. 1st login, run 1st command, ooooops.

I should probably get an SE badge for it. "Server Slayer".

djsmiley2k

what server?

That Brazilian Guy

A spare one he had, not in prod (oh God I hope)

Just kidding. Def not prod.

ToxicFrog

What command?

djsmiley2k

@Ave you seen ouur other new hideout?

Burgi

13:31

minute silence

That Brazilian Guy

@Bob We have /16 at work. (That's 65k IPs), plus a few other thousand scattered here and there.

So I went to this student lab in a library and all 30+ PCs have public unproxied IPs

@ToxicFrog "reboot".

Ubuntu's MOTD said "restart needed".

ToxicFrog

Aah

allquixotic

Maybe I can give @ThatBrazilianGuy the KVM over IP info and he can remote in and figure out why it didn't boot

That Brazilian Guy

@Bob I'm trying to open it but the site says I'm not human.

And now it's giving me 403's

allquixotic

@ThatBrazilianGuy send me your email over fb

Or here if you don't care

Bob

13:41

@ThatBrazilianGuy a /9 is 128x bigger than a /16

allquixotic

Also I always knew you were a bot

That Brazilian Guy

13:52

@Bob Well we have /16 and I think it's crazy and immense and who needs it all and admins get lazy and hand IPs like it's 1994... So who the hell owns a /9 and what for I can't even visualize it

@allquixotic 1 sec

rahuldottech

@allquixotic why do you even still have an FB account?

djsmiley2k

@ThatBrazilianGuy Amazon, nearly

That Brazilian Guy

@rahuldottech Dunno about other places but here not having FB and WhatsApp accounts is like social suicide.

Everyone talks to each other via WhatsApp, and I mean everyone, people don't email each other at work (unless it's for a boss or something), they sand WhatsApp messages, families don't text use WhatsApp

And Facebook is for keeping tabs on what's going on with acquaintances.

People don't call others to invite for social activities, they post on Facebook. At least it's my experience.

Or maybe no one actually likes me and I'm an IRL NPC. Who knows.

Bob

14:12

@ThatBrazilianGuy github.com/turt2live/matrix-wishlist/issues/74

That Brazilian Guy

@Bob What I reeeeeeally hate is the need to have a phone on at all times to use WhatsApp. And the need to give your phone number out to others. And you move cities and how do you keep your "username". And...

AAAAAH WHATSAPP SUCKS ABOUT NEARLY EVERYTHING.

OH how could I forget. WhatsApp storage is your phone storage.

Bob

@ThatBrazilianGuy dw, I hate it for the exact same (literally. the reliance on phone and tie to phone number.) reasons

there's probably half a dozen rants in transcript :P

That Brazilian Guy

And the storage. Phones in a third world country are comparatively MUCH more expensive and objetively have shitty specs, including storage.

Guess what is also super ultra common on third world countries? IM chains with videos and gifs and images and good morning messages with gifs and videos and famili groups with gifs and videos and... you get the idea.

Journeyman Geek

I need whatsapp for work

ugh

That Brazilian Guy

I've more than once seriously considered running WhatsApp on an emulated Android KVM session of a remote server.

Journeyman Geek

14:19

I used to run it on a spare phone so it wouldn't kill my battery

That Brazilian Guy

A friend kept sending me prospective freelancing clients who, like every other Brazilian, seem to only be able to converse via whatsapp. So I bought a new SIM chip and registered it and used it to talk business, running on an emulated android on my PC.

But I forgot to periodically turn on the actual phone and ended up losing the number.

Journeyman Geek

ahh

That Brazilian Guy

In all those years, of all the multiple dozen referred prospective clients I had been sent, literally one ended up using my services so no big loss.

Journeyman Geek

oh man

That Brazilian Guy

Nearly every prospective client interaction I've ever had:

Them: "Hey do you make sites"
Me: "Yes, I do, what do you need, send me details"
Them: *poof*

Journeyman Geek

14:25

one big thing I would look forward to when I get a proper non contractor job is...

no more whataspp

job -4 used jabber, job -3 used the MS thing

That Brazilian Guy

@JourneymanGeek Well. Yeah. Good luck doing that in Brazil. It's like saying we're a restaurant and no more landline phones, or like saying we're a TV network and no more advertising.

Journeyman Geek

this job has skype for business but no one uses it

@ThatBrazilianGuy heh, I can dream? ;p

That Brazilian Guy

If I was ever a team lead I'd settle for a single mean of communication (agreed by every member, ofc)

Journeyman Geek

@ThatBrazilianGuy I think SE uses SE chat and hangouts mostly

That Brazilian Guy

Specially one that doesn't force you to have an extra functioning device.

When phone-1 broke I spent 6 months + without a proper phone, and boy people really do expect you to have WhatsApp.

Twice or thrice I arrived to a locked door at work. "But we told everyone on WhatsApp".

Once I was part of a project and every detail was discussed over WhatsApp.

Which I didn't have and alerted the team lead (who is my current boss btw)

Journeyman Geek

14:29

ya

That Brazilian Guy

"Oh there will be no issues, things will work out". Yeah.

Journeyman Geek

that's basically my current job

actually its a little worse than that but public chat ;p

That Brazilian Guy

Other thing I really hate is online ettiquete in Brazil seems to be a lost art.

So you have a work group one would expect work-related questions and announcements

But you get jokes, gifs, good mornings, people selling stuff...

Journeyman Geek

oh man

our family whatsapp group is like that

That Brazilian Guy

Thankfully I don't have it that bad because my family is small and quiet

And because my coworkers use something that is as bad as whatsapp:

The "Hey can you come here just a sec" protocol.

It's really disruptive and has no logs. Two terrible anti-features.

Journeyman Geek

14:35

hah

I use whatsapp logs at work

That Brazilian Guy

As in "send this chat log to your email as text"?

Journeyman Geek

no, literally searching on the phone

That Brazilian Guy

Terrible UX; if phone dies or app corrupts you lose the logs, etc.

Journeyman Geek

it actually backs up and restores cleanly

That Brazilian Guy

Well yeah, I forgot about the integrated Google Drive backup.

RogUE

14:56

has anything changed recently?

Journeyman Geek

@RogUE GDPR

more or less its just a legal requirement

RogUE

Oh, it's about the Europeans.

Journeyman Geek

Banner is now live for all users. We’ve organized all the legal bits under https://stackoverflow.com/legal/ and GDPR SAR request forms will go live later this week.

Tweeted by Nick_Craver on May 22, 2018 at 10:40 AM in reply to Nick_Craver

allquixotic

15:32

EU citizens should say "I'm a GDPR. spam Check meowt!"

Bob

@JourneymanGeek what happened to the planned arbitration opt out form?

Journeyman Geek

@Bob for now you can email or write in

I know roughly as much as you guys

Bob

@JourneymanGeek yea, but they mentioned a form :P

Journeyman Geek

6-8 weeks? ;p

I donno

cough Its not like I have a massive inside track here

jokerdino

15:54

@Bob yeah, I want that!

@JourneymanGeek there's a deadline...

Journeyman Geek

@jokerdino You know exactly as much as I do!

but I'm pretty sure Tim said on meta they may be flexible about the opt out

jokerdino

yeah, I would like that.

RogUE

@JourneymanGeek @jokerdino let me ask you something

jokerdino

maybe so

RogUE

did you guys give SE any personal information like address, real-name etc before becoming mods?

Journeyman Geek

15:57

nope

they have my address from swag shipments

jokerdino

only for getting swag

Journeyman Geek

likewise my real name

(so the postie won't get confused)

jokerdino

you have the option to refuse to divulge info

Journeyman Geek

SE's happily shipped stuff to Journeyman Geek before.

RogUE

got any images of the swag?

Journeyman Geek

16:13

mostly T shirts

though I have one of the 2 SE hoodie designs

(there's SU one, and there used to be an employee one)

bwDraco

17:16

I actually have a Stack Overflow T-shirt from the #SOreadytohelp sweepstakes.

Aug 28 '15 at 20:50, by DragonLord

Guess what? @abbyhairboat (via email) selected me as one of several winners of the #SOreadytohelp sweepstakes!

Journeyman Geek

17:44

I have... 2 black 1 white one win 8 su t shirts, SF so se (I May have 2 I forget) and auto shirts. And the SU mglug

rahuldottech

@bwDraco luckyyy

allquixotic

I have zero SE swag - I'm an unremarkable person/user

djsmiley2k

2

oh lord what have I done...

allquixotic

RIGHT FROM HER PHONE!

jokerdino

what is that

allquixotic

17:59

Apparently he has a game where he's designated a dwarven child as an animal ready for the slaughter

Imagine a dwarf going "muuuuu!"

Store sells dwarf steaks

jokerdino

hmm

don't get gilled @dj

Journeyman Geek

gilled?

Evan Carroll

18:13

Can I get a definitive answer on the migration of my TempleOS questions?

That's what the Stack Exchange employee wants to do, and I'd rather not ask them here because it's somewhat disrespectful to those that took part answering them.

Not many people took part in the conversation. meta.superuser.com/questions/13082/questions-about-temple-os

And I never got a response on it.

Journeyman Geek

18:29

I think my answer more or less counts as official

Ave

@allquixotic I won a SO shirt as part of that one 10m question thing

...and I forgot to reply to the email

I could have a shirt, I don't

:/

Canadian Luke

I got a mod hat for Freelancing.SE

But I want SU swag :(

Burgi

@EvanCarroll i didn't understand the question

allquixotic

19:04

@Burgi How do you feel?

!!say @Burgi How do you feel?

ChatBot John Cavil

@Burgi How do you feel?

allquixotic

19:43

You're supposed to say. "I do not understand the question."

Circus Cat

19:59

I do not understand the question.

bwDraco

@rahuldottech yyy

Canadian Luke

21:21

I got STP working :-D Sweetness!

bertieb

Yay!

You... uh, Stopped The Postman?

Michael Frank

Stone Temple Pilots?!

bertieb

Shared The Post?

DavidPostill

Software Test Plan?

bertieb

Stabbed, Then Pain?

Canadian Luke

21:27

Shot the Police?

Nah, Spanning Tree Protocol

bertieb

Ahh

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