why am getting static IP address

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129 posts

Master Geek
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#399194 2-Nov-2010 16:01

I don’t know how Slingshot are doing this internally – however from an ISP standpoint, having customers with predictable IP addresses makes finding individual customers far easier for things like billing and tracking abuse. Having customers change IP addresses constantly makes it especially difficult when you’re doing clever things to your billing like excluding traffic to specific destinations then link the traffic to a specific account.

I wouldn’t be surprised to see Slingshot doing this, I believe Orcon also give their customers a “Free” Static IP as standard.

Paying for a static IP address usually lets you do things like assign reverse DNS and guarantees that your ISP isn’t going to shuffle you around their subnets as they reallocate them. Some ISPs (Like Telecom) give you a static IP automatically as part of their business plans.

I work for a global Data Protection Software company - But my opinions are my own.

Ragnor

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#399435 3-Nov-2010 03:05

If I recall correctly Slingshot are not using static ip addresses but rather "sticky" ones.

eg: if you simply reboot it you will likely get the same address. If you turn your modem/router off for more than x minutes you will get probably get a different ip address.

Might have to experiment with how long, 30min would probably do it.

wreck90

780 posts

Ultimate Geek
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#399445 3-Nov-2010 07:36

Don't the ISP's give you an webpage to change static IP's?

Cymro

283 posts

Ultimate Geek
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#399460 3-Nov-2010 08:21

I wonder if Slingshot are using statics to identify their AYCE plan customers for routing? (If the OP is on AYCE).

The other point I'd like to make is that if you really want that online content badly enough, buy a subscription to access it as much as you like and support the business providing it, instead of trying to get it for free.

webwat

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#399606 3-Nov-2010 13:48

freitasm:
nzscom: At home I have a Telstra broadband account and that came with a static IP by default. Not sure why. So it can happen on other networks too #justsaying :) ... although my colleague had to pay extra for a static IP address with his Vodafone broadband account.

- Mark

Very different things. TelstraClear cable service is always static IP.

DSL services are mostly dynamic by default. If there are not enough modems recycling you might get the same address. Or to make things easier they might have a policy to only assign a new IP if your lease expires, otherwise you get the same. Who knows?

Or you might get the same address just because its available. Waiting for 10 or 20 minutes might result in another user picking up that IP. The only reason I can think of that a BRAS would force an IP change every login would be that they dont want you hosting websites with DynDNS.

BTW if switching it off doesnt work, you might want to login to your router and tell it to close the PPP session. Apparently Telecom's L2 tunnelling system doesn't always send through a stop packet when the modem goes off.

Time to find a new industry!

sqlpro

516 posts

Ultimate Geek
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#399733 3-Nov-2010 17:00

BTW if switching it off doesnt work, you might want to login to your router and tell it to close the PPP session. Apparently Telecom's L2 tunnelling system doesn't always send through a stop packet when the modem goes off.

how do i stop ppp session ? is it clicking "disconnect" button on the router home page ? thanks.

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raytaylor

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#400432 5-Nov-2010 01:11

On a DHCP server that issues IP addresses, you can set the length of time an ip address can be issued, and the amount of time before it goes back in the unused pool after being released by a client.

Slingshot set the time between client release, to the reentry into the pool to something like 18 hours.
So if you keep your modem reconnects to the internet within 18 hours of disconnecting, then it will get the same ip address.

It isnt the same as a static ip but its still pretty good. Also it helps where forums block people from spamming by blocking your ip. It make it very hard to spam if you need to turn off your modem for 18 hours to get a new unblocked ip.

No one from slingshot has given the exact time, but the general consensus among customers that it is around 18 hours.

Ray Taylor

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Fraktul

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#400443 5-Nov-2010 02:25

If you are using PPP then your addressing will likely come out of a pool. Depending on the length of time you are disconnected, if the disconnection was gracefully torn down (vs timeout) and if other users in the same pool are authenticating during this period, then you may be issued a new IP address.

if DHCP is used then a DHCP release may be used - this is optional so the server may ignore it.

Linuxluver

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#400450 5-Nov-2010 06:14

sqlpro: Hello
quick question
my current ISP is slingshot and just wondering why am getting same IP address (even after restart of the pc).I thought unless you sign up for static Ip you get dynamic address ,why not here?

with my previous ISP provider (telstra) i dont have this issue. how do i get dynamic address always?
thanks for the advise.

Interesting you see a static IP as a problem. :-)

Most people would pay extra to get one.

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sqlpro

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#400457 5-Nov-2010 07:21

raytaylor: On a DHCP server that issues IP addresses, you can set the length of time an ip address can be issued, and the amount of time before it goes back in the unused pool after being released by a client.

Slingshot set the time between client release, to the reentry into the pool to something like 18 hours.
So if you keep your modem reconnects to the internet within 18 hours of disconnecting, then it will get the same ip address.

It isnt the same as a static ip but its still pretty good. Also it helps where forums block people from spamming by blocking your ip. It make it very hard to spam if you need to turn off your modem for 18 hours to get a new unblocked ip.

No one from slingshot has given the exact time, but the general consensus among customers that it is around 18 hours.

i checked the lease time and its set to 259200 seconds (3 days)!

wallop

367 posts

Ultimate Geek
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#400477 5-Nov-2010 08:57

It's to make it easier for the internet police to track you down. They hate tracing differnt ip's back to people

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sqlpro

516 posts

Ultimate Geek
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#400480 5-Nov-2010 09:04

am trying to understand how "lease" time works, what if i set it to say 1 hour, if am using internet more than hour and will it be disconnected ? and need to restart my pc and connect to internet again?
OR is this happens (assigning new IP) happens in the background ?

nickb800

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#400481 5-Nov-2010 09:09

We had a planned power cut yesterday of seven hours so obviously our modem was disconnected for the duration. Aftewards, we had a different IP. On a naked plan.

wallop

367 posts

Ultimate Geek
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#400486 5-Nov-2010 09:14

You cannot change the lease time that your ISP is using. You can only change it for your pc's.

sqlpro

516 posts

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#400488 5-Nov-2010 09:19

wallop: You cannot change the lease time that your ISP is using. You can only change it for your pc's.

ok thanks for that. just wondering if that effects how fast a router or does not connect ?

i mean i've two routers at home but only use one at a time depening where am sitting. since i changed to slingshot one of the routers takes forever to connect (dsl,internet lights on router wont light up) or does not connect at all. its becoming very annoying . i wonder how would you fix that.

thanks for the advise guys.

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