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How does setting a static IP on a mobile device prevent linux router from assigning that IP address?



 
 
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  #31  
Old April 12th 17, 07:10 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
Whiskers
external usenet poster
 
Posts: 37
Default How does setting a static IP on a mobile device prevent linuxrouter from assigning that IP address?

On 2017-04-12, nospam wrote:
In article ,
Whiskers wrote:

Google "address reservation". You don't want a fixed IP address
on a phone.

Not true, he does.

he might think he does, but he doesn't.

Your opinion noted.

it's not an opinion. he should *not* have a fixed ip address on his
phone. that is only going to cause a world of problems, especially
since he doesn't understand what he's doing.

what he wants is a reserved address, which is done at the router.


Setting his phone to use a static IP while connected to his home
network, would be a good idea


it's a horrible idea because he'd have to change it every time he
leaves the house and back again when he returns.

that's a ****load of effort for absolutely no reason, since what he
claims to want can be done entirely automatically.


I admit that my memory could be faulty, it being some months since
setting up an Android device to access a WiFi access point it hadn't
used before, but doesn't the setting up on the phone of a new access
point give the user the choice between DHCP and static IP? Each
internet connection has its own settings on the phone, each one only
needs to be set up once (as long as you et it correct). DHCP is
probably what you get if you don't try to change it. The settings on
the phone for one network should not (I'd even go as far as MUST NOT)
have any effect on the settings for any other network.

So there would be no need to change any settings each time he goes out
or comes back home. The phone will automatically connect with any
network it already knows about, if that's the way it has been set up.

[...]

--
-- ^^^^^^^^^^
-- Whiskers
-- ~~~~~~~~~~
Ads
  #32  
Old April 12th 17, 07:17 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
Tomos Davies
external usenet poster
 
Posts: 66
Default How does setting a static IP on a mobile device prevent linux router from assigning that IP address?

In on.nl, Kees Nuyt
suggested:

On any mobile device (iOS, Android, whatever), you can set up an FTP server
(eg ES File Explorer on Android) with a static IP address so that Windows
"My Network Places" has a permanent "shortcut" to the entire mobile device
file system (eg ftp://192.158.1.15:3721).


You probably mean 192.168.1.15 .


Yes. My mistake. I had meant 168!
Thank you for correcting that.

Here is the actual URL: http://i.cubeupload.com/wboAp1.gif
The Windows "My Network Places" shortcut is to "ftp://192.168.1.15:3721".

Clicking on that "My Network Places" shortcut when the ES File Explorer FTP
server is running on the Android device opens up the entire Android
device's file system "as if it were mounted" on Windows.

The beauty is that this works for any Windows computer and for every user
on the Windows computer since there is no software to install on the
Windows computer.

I have multiple routers at home and multiple access points, so I was
surprised at how well this single change in Android worked, even after
numerous reboots of all the systems.
  #33  
Old April 12th 17, 07:19 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
Tomos Davies
external usenet poster
 
Posts: 66
Default How does setting a static IP on a mobile device prevent linux router from assigning that IP address?

In , Whiskers
suggested:

My guess is that your router's DHCP server originally gave your Android
device the dynamic IP number 192.168.1.15 (not 192.158.1.15 - that's a
publicly routable IP number)


Ooooops. Thank you. Yes, I had meant "168" and not "158" (which was an
errant typo).
  #34  
Old April 12th 17, 07:19 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
Tomos Davies
external usenet poster
 
Posts: 66
Default How does setting a static IP on a mobile device prevent linux router from assigning that IP address?

In , nospam suggested:

Setting his phone to use a static IP while connected to his home
network, would be a good idea


it's a horrible idea because he'd have to change it every time he
leaves the house and back again when he returns.


On Android, the IP address on the phone is set "per access point"!

Look at the original post again where the Android settings were shown:
Android: Settings WiFi {AP SSID} Modify network config
IP settings Static IP address = 192.168.1.15

Notice that the "static" setting is set *per access point*.
That means the "static" directive only applies for *that* access point.

There is a caveat which I'd like to ask the cognoscenti here to explain:

Interestingly, in practice, at home, since I have more than half a dozen
access points, you'd think I need to make the static setting for each
access point at home - but - in practice - so far anyway - the phone has
remained on the same IP address - even after multiple boots of the
computers, mobile devices, and router.

Why does it work so well (without me setting the phone's IP address to be
static for *all* my access points)?

  #35  
Old April 12th 17, 07:20 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
Tomos Davies
external usenet poster
 
Posts: 66
Default How does setting a static IP on a mobile device prevent linux router from assigning that IP address?

In , nospam suggested:

Setting his phone to use a static IP while connected to his home
network, would be a good idea


it's a horrible idea because he'd have to change it every time he
leaves the house and back again when he returns.


On Android, the IP address on the phone is set "per access point"!

Look at the original post again where the Android settings were shown:
Android: Settings WiFi {AP SSID} Modify network config
IP settings Static IP address = 192.168.1.15

Notice that the "static" setting is set *per access point*.
That means the "static" directive only applies for *that* access point.

There is a caveat which I'd like to ask the cognoscenti here to explain:
http://i.cubeupload.com/wboAp1.gif

Interestingly, in practice, at home, since I have more than half a dozen
access points, you'd think I need to make the static setting for each
access point at home - but - in practice - so far anyway - the phone has
remained on the same IP address - even after multiple boots of the
computers, mobile devices, and router.

Why does it work so well (without me setting the phone's IP address to be
static for *all* my access points)?

  #36  
Old April 12th 17, 07:22 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
nospam
external usenet poster
 
Posts: 4,718
Default How does setting a static IP on a mobile device prevent linux router from assigning that IP address?

In article ,
Whiskers wrote:


Setting his phone to use a static IP while connected to his home
network, would be a good idea if (when) he sets his router to use a
static IP for that device.


This does not make sense.
A static address for a device is set on the device, not on the router.


To work properly, it needs to be set on both.


nope. a static ip is set on the device. there's nothing to set on the
router.

if the router can route traffic from that ip, then it will work.
otherwise it won't.

a static ip has no advantages for a mobile device. only disadvantages.

*if* the phone's ip needs to be the same (which is rare), the proper
solution is a reserved dhcp address at the router (sometimes called
static dhcp which may be the source of the confusion).
  #37  
Old April 12th 17, 07:24 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
Mark Lloyd[_2_]
external usenet poster
 
Posts: 1,756
Default How does setting a static IP on a mobile device prevent linuxrouter from assigning that IP address?

On 04/12/2017 07:14 AM, Whiskers wrote:

[snip]

what he wants is a reserved address, which is done at the router.


Setting his phone to use a static IP while connected to his home
network, would be a good idea if (when) he sets his router to use a
static IP for that device. If he wants to connect to other networks
away from home he should set his phone to use DHCP with them if that's
what they expect (which it probably is, as a general rule).


Reserved address is what I recommend. You set the router so DHCP always
returns THAT IP to a device with THAT MAC. The device itself is set to
use DHCP.

--
Mark Lloyd
http://notstupid.us/

"Is man one of God's blunders, or is God one of man's blunders?"
[Nietzsche]
  #38  
Old April 12th 17, 07:32 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
Tomos Davies
external usenet poster
 
Posts: 66
Default How does setting a static IP on a mobile device prevent linux router from assigning that IP address?

In , Whiskers
suggested:

I admit that my memory could be faulty, it being some months since
setting up an Android device to access a WiFi access point it hadn't
used before, but doesn't the setting up on the phone of a new access
point give the user the choice between DHCP and static IP? Each
internet connection has its own settings on the phone, each one only
needs to be set up once (as long as you et it correct). DHCP is
probably what you get if you don't try to change it. The settings on
the phone for one network should not (I'd even go as far as MUST NOT)
have any effect on the settings for any other network.

So there would be no need to change any settings each time he goes out
or comes back home. The phone will automatically connect with any
network it already knows about, if that's the way it has been set up.


You are correct.

The setting on Android for DHCP (default) or Static is "per access point".

So, there's no need to change it when I leave the house.

In practice, it's even better than that, in that I have more than a half
dozen access points at home on multiple routers, and, as if by magic, the
IP address hasn't changed yet, despite multiple reboots of all the devices.

So far, weeks later, the entire device file system is always conveniently
"mounted", seemingly automagically, on my Windows computer.
http://i.cubeupload.com/wboAp1.gif

I think this thread explained the "magic", some of which may have been by
chance since I didn't choose 192.168.1.15 - it was already *assigned* by
one of the routers - all I did was flip the Android settings for that
access point from "DHCP" (the default) to "Static".
  #39  
Old April 12th 17, 07:41 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
Mark Lloyd[_2_]
external usenet poster
 
Posts: 1,756
Default How does setting a static IP on a mobile device prevent linuxrouter from assigning that IP address?

On 04/12/2017 07:28 AM, Pascal Hambourg wrote:
Le 12/04/2017 à 14:14, Whiskers a écrit :

Setting his phone to use a static IP while connected to his home
network, would be a good idea if (when) he sets his router to use a
static IP for that device.


This does not make sense.
A static address for a device is set on the device, not on the router.


An "address reservation" IS set on the router, and is almost the same
thing as a static address. I find it preferable, since maintenance is
centralized. The device itself is set to "dynamic", but the DHCP server
in the router always provides the same IP to that device.

--
Mark Lloyd
http://notstupid.us/

"Is man one of God's blunders, or is God one of man's blunders?"
[Nietzsche]
  #40  
Old April 12th 17, 07:44 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
Mark Lloyd[_2_]
external usenet poster
 
Posts: 1,756
Default How does setting a static IP on a mobile device prevent linuxrouter from assigning that IP address?

On 04/12/2017 07:30 AM, Chris Green wrote:

[snip]

I didn't say it wasn't easy to change, just that it is sometimes the
default router address. It can make things (a bit) difficult
sometimes if you change the router's address because if/when you have
to do a reset everything goes awry.


There's usually no benefit to changing it, although I have when using 2
or more routers in series (where each needs to be using a different
network). Also, you might if you need to replace a router on an existing
network, and the new router uses a different 3rd octet (the 'y' in
192.168.y.x/24).

--
Mark Lloyd
http://notstupid.us/

"Is man one of God's blunders, or is God one of man's blunders?"
[Nietzsche]
  #41  
Old April 12th 17, 07:47 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
Mark Lloyd[_2_]
external usenet poster
 
Posts: 1,756
Default How does setting a static IP on a mobile device prevent linuxrouter from assigning that IP address?

On 04/12/2017 06:22 AM, nospam wrote:

[snip]

depends on the router. it's easily changed to anything you want and it
doesn't need to be 192.168/16 either.


The usual subnet for home routers is 192.168.y.0/24 , where 'y' is
different for different routers, but has to be the same for all
networked devices.

[snip]

--
Mark Lloyd
http://notstupid.us/

"Is man one of God's blunders, or is God one of man's blunders?"
[Nietzsche]
  #42  
Old April 12th 17, 07:51 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
Mark Lloyd[_2_]
external usenet poster
 
Posts: 1,756
Default How does setting a static IP on a mobile device prevent linuxrouter from assigning that IP address?

On 04/12/2017 07:39 AM, nospam wrote:

[snip]

he hasn't said *why* he wants this, and quite likely, there's an even
easier solution.


I use address reservation for (non-mobile) computers and networked
printers (*), so I can find them (from another computer) when I want to.
I'm not yet sure why I'd want to do that for a mobile device.

* - there's also ReplayTV, but you probably aren't interested.
--
Mark Lloyd
http://notstupid.us/

"Is man one of God's blunders, or is God one of man's blunders?"
[Nietzsche]
  #43  
Old April 12th 17, 07:51 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
nospam
external usenet poster
 
Posts: 4,718
Default How does setting a static IP on a mobile device prevent linux router from assigning that IP address?

In article ,
Whiskers wrote:

Setting his phone to use a static IP while connected to his home
network, would be a good idea


it's a horrible idea because he'd have to change it every time he
leaves the house and back again when he returns.

that's a ****load of effort for absolutely no reason, since what he
claims to want can be done entirely automatically.


I admit that my memory could be faulty, it being some months since
setting up an Android device to access a WiFi access point it hadn't
used before, but doesn't the setting up on the phone of a new access
point give the user the choice between DHCP and static IP?


sure, but using static ip on a phone is a *really* bad idea because it
will be connecting to different networks as a matter of course. that
static ip isn't going to work across all of them and changing it each
time is crazy. it's virtually guaranteed that there will be a conflict
and that's really going to **** off the users of the other networks.

*if* you want an ip address to always be the same on a given network
(which in some cases is useful but not so much on a phone), then use
reserved dhcp.

reserved dhcp is sometimes called static dhcp, perhaps causing the
confusion. that's technically a contradiction, but it's not unusual to
see it called that.

https://www.dd-wrt.com/wiki/index.php/Static_DHCP
  #44  
Old April 12th 17, 07:51 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
nospam
external usenet poster
 
Posts: 4,718
Default How does setting a static IP on a mobile device prevent linux router from assigning that IP address?

In article , Mark Lloyd
wrote:


what he wants is a reserved address, which is done at the router.


Setting his phone to use a static IP while connected to his home
network, would be a good idea if (when) he sets his router to use a
static IP for that device. If he wants to connect to other networks
away from home he should set his phone to use DHCP with them if that's
what they expect (which it probably is, as a general rule).


Reserved address is what I recommend. You set the router so DHCP always
returns THAT IP to a device with THAT MAC. The device itself is set to
use DHCP.


that's exactly what should be done.
  #45  
Old April 12th 17, 07:51 PM posted to comp.mobile.android,alt.internet.wireless,alt.os.linux,alt.comp.os.windows-10
nospam
external usenet poster
 
Posts: 4,718
Default How does setting a static IP on a mobile device prevent linux router from assigning that IP address?

In article , Tomos Davies
wrote:

Setting his phone to use a static IP while connected to his home
network, would be a good idea


it's a horrible idea because he'd have to change it every time he
leaves the house and back again when he returns.


On Android, the IP address on the phone is set "per access point"!


no it isn't.

the ip address is normally set by a dhcp server, of which there should
be only one dhcp server on the subnet (with very rare exception, none
of which applies here).

Look at the original post again where the Android settings were shown:
Android: Settings WiFi {AP SSID} Modify network config
IP settings Static IP address = 192.168.1.15

Notice that the "static" setting is set *per access point*.
That means the "static" directive only applies for *that* access point.

There is a caveat which I'd like to ask the cognoscenti here to explain:

Interestingly, in practice, at home, since I have more than half a dozen
access points, you'd think I need to make the static setting for each
access point at home - but - in practice - so far anyway - the phone has
remained on the same IP address - even after multiple boots of the
computers, mobile devices, and router.

Why does it work so well (without me setting the phone's IP address to be
static for *all* my access points)?


you really should learn about basic networking before you go ****ing
around with static ips.

you *are* going to cause problems, and ones which you probably won't be
able to easily fix because you don't understand what you did.

anyway, your description of what you want to do is much better done
with host names, not fixed ip addresses, such as: myandroidphone.local.
 




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