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Groups > comp.os.linux.networking > #4497 > unrolled thread

Get IP address

Started byChris Elvidge <chris@mshome.net>
First post2019-11-26 13:41 +0000
Last post2019-11-28 01:28 +0000
Articles 7 — 5 participants

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  Get IP address Chris Elvidge <chris@mshome.net> - 2019-11-26 13:41 +0000
    Re: Get IP address Bit Twister <BitTwister@mouse-potato.com> - 2019-11-26 07:52 -0600
      Re: Get IP address Chris Elvidge <chris@mshome.net> - 2019-11-26 14:03 +0000
      Re: Get IP address Roger Blake <rogblake@iname.invalid> - 2019-11-26 17:58 +0000
        Re: Get IP address Bit Twister <BitTwister@mouse-potato.com> - 2019-11-26 14:26 -0600
          Re: Get IP address "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2019-11-26 16:40 -0500
    Re: Get IP address Dan Purgert <dan@djph.net> - 2019-11-28 01:28 +0000

#4497 — Get IP address

FromChris Elvidge <chris@mshome.net>
Date2019-11-26 13:41 +0000
SubjectGet IP address
Message-ID<qrja2g$gof$1@dont-email.me>
I'm getting different results for my IP address from successive 
consecutive calls to whatismyipaddress.com and ifconfig.me/ip, depending 
whether I use wget/curl or links. eg:

$ IP=$(wget -O- ifconfig.me/ip 2>/dev/null); echo $IP
217.171.129.78

$ IP=$(wget -O- --user-agent=links whatismyipaddress.com 2>/dev/null | 
grep -m1 IPv4: | cut -d'>' -f5 | cut -d'<' -f1); echo $IP
94.197.120.175

$ links -dump ifconfig.me/ip | tr -d ' '
92.40.255.5

$ links -dump whatismyipaddress.com 2>/dev/null | \
 >                 grep -m1 -A1 "IPv4:" | \
 >                 tail -n1 | \
 >                 tr -d ' '
94.197.120.175

Does it really change that fast? Anyone any ideas why? Thanks.
Internet via hotspot, 3 SIM in Windows phone.


-- 

Chris Elvidge, England

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#4498

FromBit Twister <BitTwister@mouse-potato.com>
Date2019-11-26 07:52 -0600
Message-ID<slrnqtqbh2.1aq.BitTwister@wb.home.test>
In reply to#4497
On Tue, 26 Nov 2019 13:41:35 +0000, Chris Elvidge wrote:
> I'm getting different results for my IP address from successive
> consecutive calls to whatismyipaddress.com and ifconfig.me/ip, depending
> whether I use wget/curl or links. eg:

> Does it really change that fast? Anyone any ideas why? Thanks.

Maybe you need to get a second opinion from other sites.

curl http://icanhazip.com
curl http://ident.me
curl whatismyip.akamai.com
wget -qO - http://icanhazip.com
wget -qO - http://ident.me/
wget -qO - http://smxi.org/opt/ip.php

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#4499

FromChris Elvidge <chris@mshome.net>
Date2019-11-26 14:03 +0000
Message-ID<qrjbcf$p8n$1@dont-email.me>
In reply to#4498
On 26/11/2019 13:52, Bit Twister wrote:
> On Tue, 26 Nov 2019 13:41:35 +0000, Chris Elvidge wrote:
>> I'm getting different results for my IP address from successive
>> consecutive calls to whatismyipaddress.com and ifconfig.me/ip, depending
>> whether I use wget/curl or links. eg:
> 
>> Does it really change that fast? Anyone any ideas why? Thanks.
> 
> Maybe you need to get a second opinion from other sites.
> 
> curl http://icanhazip.com
> curl http://ident.me
> curl whatismyip.akamai.com
> wget -qO - http://icanhazip.com
> wget -qO - http://ident.me/
> wget -qO - http://smxi.org/opt/ip.php
> 

Thanks for that. It seems it's ifconfig.me/ip that's the outlier here.


-- 

Chris Elvidge, England

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#4500

FromRoger Blake <rogblake@iname.invalid>
Date2019-11-26 17:58 +0000
Message-ID<20191126125622@news.eternal-september.org>
In reply to#4498
On 2019-11-26, Bit Twister <BitTwister@mouse-potato.com> wrote:
> Maybe you need to get a second opinion from other sites.

I like http://checkip.dyndns.com, works with any browser (including
lynx etc.) and just returns the IP address without a lot of cruft.

-- 
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#4501

FromBit Twister <BitTwister@mouse-potato.com>
Date2019-11-26 14:26 -0600
Message-ID<slrnqtr2ir.pjt.BitTwister@wb.home.test>
In reply to#4500
On Tue, 26 Nov 2019 17:58:07 -0000 (UTC), Roger Blake wrote:
> On 2019-11-26, Bit Twister <BitTwister@mouse-potato.com> wrote:
>> Maybe you need to get a second opinion from other sites.
>
> I like http://checkip.dyndns.com, works with any browser (including
> lynx etc.) and just returns the IP address without a lot of cruft.

In a browser, somewhat true. But for getting the ip into a variable via
a script, there is way too much cruft. For example:

$ curl  http://checkip.dyndns.com
<html><head><title>Current IP Check</title></head><body>Current IP Address: 48.143.134.52</body></html>

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#4502

From"David W. Hodgins" <dwhodgins@nomail.afraid.org>
Date2019-11-26 16:40 -0500
Message-ID<op.0bvs55e0a3w0dxdave@hodgins.homeip.net>
In reply to#4501
On Tue, 26 Nov 2019 15:26:00 -0500, Bit Twister <BitTwister@mouse-potato.com> wrote:

> $ curl  http://checkip.dyndns.com
> <html><head><title>Current IP Check</title></head><body>Current IP Address: 48.143.134.52</body></html>

The following work, returning just the ip address ...
wget -qO - icanhazip.com
wget -qO - http://myip.dnsomatic.com/
wget -qO - http://ident.me/

Regards, Dave Hodgins

-- 
Change dwhodgins@nomail.afraid.org to davidwhodgins@teksavvy.com for
email replies.

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#4503

FromDan Purgert <dan@djph.net>
Date2019-11-28 01:28 +0000
Message-ID<slrnqtu8l8.doa.dan@djph.net>
In reply to#4497
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Chris Elvidge wrote:
> Internet via hotspot, 3 SIM in Windows phone.

There's the reason right there.  Your ISP is rotating you through
different ruotes out of their network (i.e. they're employing CGNAT).

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-- 
|_|O|_| 
|_|_|O| Github: https://github.com/dpurgert
|O|O|O| PGP: 05CA 9A50 3F2E 1335 4DC5  4AEE 8E11 DDF3 1279 A281

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