Odd iPhone DHCP behavior.
I'm getting strange ARP/DHCP behavior with an iphone on a local network. The output from arpwatch (on a linux system) shows:
May 14 12:23:43 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:23:44 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:23:44 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:23:44 milonga arpwatch: bogon 169.254.14.<number> 0:1b:63<protected> eth0
May 14 12:23:45 milonga arpwatch: bogon 169.254.14.<number> 0:1b:63<protected> eth0
May 14 12:23:46 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:23:46 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:23:47 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:23:47 milonga arpwatch: new station 192.168.<number> 0:1b:63<protected> eth0
May 14 12:23:48 milonga arpwatch: bogon 169.254.14.<number> 0:1b:63<protected> eth0
May 14 12:24:51 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:24:52 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:24:52 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:24:53 milonga arpwatch: bogon 169.254.14.<number> 0:1b:63<protected> eth0
May 14 12:24:53 milonga arpwatch: bogon 169.254.14.<number> 0:1b:63<protected> eth0
May 14 12:24:54 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:24:55 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:24:55 milonga arpwatch: bogon 0.0.0.0 0:1b:63<protected> eth0
May 14 12:24:55 milonga arpwatch: new station 192.168.<number> 0:1b:63<protected> eth0
May 14 12:24:56 milonga arpwatch: bogon 169.254.14.<number> 0:1b:63<protected> eth0
As you can see, the iPhone seems to get several DHCP addresses in a very short time and go to a self-assigned number in between. Does anyone know of a reason for this behavior? It knows about the network (which is using WPA) and the network limits access to known MAC addresses (this one is allowed).
This seems to cause problems with internal routing on the network (not sure what that might be). The DHCP server is a SonicWall firewall.
Yes, I've noticed this; it seems to initially broadcast, then switch over the previously assigned address. You wouldn't happen to be using WDS would you?
The only thing I've been able to figure out is that if it sees both wireless access points it seems to ARP on both, select the one with the stronger strength, and then attach to it.
You can backtrack on this by assigning a DHCP client ID and watching your logs. You'll notice it only supplies the Client ID to the station with the strongest signal strength. This seems to be a real problem if you have two in range and one is "borderline" and flutters in and out of range.
To workaround, assuming you are using WDS and have a central DHCP server, you can reserve an IP for the phone -- so even when the fluttering is happening it will always get the same IP for the MAC address.
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Hello all,
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E1200 odd roque DHCP server problem
My local network connected to AT&T Uverse has both len and wiress connections. with some devices specified in the DHCP reservations list. all has worked fine for a while now. the UVerse modems do not support DHCP reservation configurations.
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I have not tried to recreate the scenario. any ideas welcomed.config
ATT Pace modem, DHCP on, wireless on, address range 192.168.1.2- 192.168.1.40, dhcp server at 192.1.1
ethernet cable from ATT modem to 1200 'wan' port.
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out of E1200
ethernet to local machine
ethernet to Insteon automation hub
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switch to local windows machine (dhcp reservation address 192.168.2.106)
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Nexus 5000 - Odd Ethernet interface behavior (link down inactive)
Hi Guys,
This would sound really trivial but it is very odd behavior.
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Ethernet1/16 is up
Hardware: 1000/10000 Ethernet, address: 000d.ece7.85d7 (bia 000d.ece7.85d7)
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30 seconds output rate 96 bits/sec, 0 packets/sec
Load-Interval #2: 5 minute (300 seconds)
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RX
0 unicast packets 0 multicast packets 0 broadcast packets
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0 unicast packets 163 multicast packets 0 broadcast packets
163 output packets 15883 bytes
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1 interface resets
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sh int e1/16
Ethernet1/16 is down (inactive)
Hardware: 1000/10000 Ethernet, address: 000d.ece7.85d7 (bia 000d.ece7.85d7)
Description: shipley-p1.its RK14/A13
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reliability 255/255, txload 1/255, rxload 1/255
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30 seconds output rate 0 bits/sec, 0 packets/sec
Load-Interval #2: 5 minute (300 seconds)
input rate 0 bps, 0 pps; output rate 0 bps, 0 pps
RX
0 unicast packets 0 multicast packets 0 broadcast packets
0 input packets 0 bytes
0 jumbo packets 0 storm suppression packets
0 runts 0 giants 0 CRC 0 no buffer
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0 unicast packets 146 multicast packets 0 broadcast packets
146 output packets 13083 bytes
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sh ver
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Copyright (c) 2002-2010, Cisco Systems, Inc. All rights reserved.
The copyrights to certain works contained herein are owned by
other third parties and are used and distributed under license.
Some parts of this software are covered under the GNU Public
License. A copy of the license is available at
http://www.gnu.org/licenses/gpl.html.
Software
BIOS: version 1.2.0
loader: version N/A
kickstart: version 4.2(1)N1(1)
system: version 4.2(1)N1(1)
power-seq: version v1.2
BIOS compile time: 06/19/08
kickstart image file is: bootflash:/n5000-uk9-kickstart.4.2.1.N1.1.bin
kickstart compile time: 4/29/2010 19:00:00 [04/30/2010 02:38:04]
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thanks
SheldonI had identical issue
Two interfaces on two different FEXes were INACTIVE. I have two Nexus 5596 in vPC and A/A FEXes.
I also use config-sync feature.
Very same configuration was applied to other ports on other FEXes and they were working with no problems.
interface Ethernet119/1/1
inherit port-profile PP-Exchange2003
I checked VLAN status associated with this profile and it was active (of course it was, other ports were ok).
I solved it by removing port profile from this port and re-applied it... voila, port changed state to up!
Very very strange. -
Hi everyone,
I've been running in to some trouble with my university's IT department. They say that my Mac Mini (1.66GHz CoreDuo) has times when it's trying to connect to something via port 139 (netbios-ssn). They claim that it averages over 1 attempt per second. However, in all of my snooping, using Activity Monitor, Network Utility, and Little Snitch, I've never noticed anything odd. I do admit that I might not be observing it at the correct times, but I would like to get to the bottom of this. Currently my IT department has my computer "quarantined" and won't authorize it to access the network again until I can sort this out.
Have any of you heard of something like this before (the 139 connection attempts)?
Any help is GREATLY appreciated.
Thanks,
Dave DeLongAt least for me, anytime I use a file dialog I get a message from little snitch telling me that it's trying to connect to port 139 - so any time I try to open or save a document, etc. Little Snitch tells me that the program I'm using is trying to connect via port 139.
Same for when I try to choose a network printer.
The snitch tells me about connect attempts over port 139 quite often, but not once per second.
Finder is doubtless doing its own queries to "discover" what's out there on the network.
I have a hard time believing it's even an issue, as every Mac, Linux, and Unix box that tries to connect to the windows shares on the network are going to have similar behavior. The Engineering department alone would be *+up in arms+* over such a policy. **** hath no fury like a few dozen EE students whose computers are banned.
First because it's asinine - a connection attempt over port 139 is fairly innocent; you have to discover what's on the CIFS/SMB (ie. Windows shares) network somehow. Pretty much every non-Microsoft device (including Macs) that can access Windows shares uses "samba", which can be set to periodically ping the network to discover shares on the network. The whole point is so things "plug and play" without the IT manager having to do anything.
SMB/CIFS is a very chatty protocol to begin with... -
Something odd happened today with my MBP (2011)... I'm working away with it while it's plugged into power and all of a sudden it starts charging... but I never unplugged it or lost power or anything (and it's on a mondo UPS anyway).
It's been showing 98% instead of 100%, but showing "fully charged" with a green light and from reading the articles from Apple this is totally normal. I did manage to get it to show 100% after a SMC reset, but after a subsequent reboot it went back to 98%. Anyway, it actually looks like it's going to charge to 100% now (99% and still showing orange light).
Has anyone seen this behavior? Normal? Something to consider going to Apple store about?
Thanks.I understand the system will charge when it needs to, but in all my days with MacBook's and the like I've never seen one up and start charging AFTER being plugged in for several days and without any provocation (i.e. unplugging it for a few minutes).
My battery info all looks really good and the condition says "normal" so as long as "normal" is the same as "good" then it's probably fine. Still odd, but fine. -
I receive a lot of mail with attachments so I created a Smart Mailbox with the following conditions -- ALL must be met:
1. Contains Attachments
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My goal is to keep my mail intact for 2 weeks, and then delete the attachments so I can save disk space.
The Smart Mailbox works but not as I expected. I would assume that every day there would be at least one message that meets the conditions since I receive at least one attachment per day. What actually occurs is that the Smart Mailbox only shows mail every two weeks but some of the messages are older than two weeks -- as old as four weeks. The behavior seems odd to me.
Any suggestions?
Mac OS X (10.4.3)If it's "not in the last 2 weeks" then it'll show messages older than the last 2 weeks. Do you want to show messages that are 2 weeks old? If yes, then change "not in the last 2 weeks" to "is exactly 2 weeks".
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On my startup disk, I have a movie file (.mov) and a folder I want to collect movies in. Straightforward enough.
So I click/drag the .mov file onto the folder. It shows me the green + icon, and when I let go, it COPIES the file into the folder, not by simply MOVING the file from the disktop to the folder. Wha?
When I grab that same file in the folder and move it to the disktop, it works as expected, insisting that it must be DUPLICATED, replacing the disktop, original file.
OK. So instead of doing that, I decide to trash the original file, then move the version out of the folder and back to the disktop.
In order to do that, I use the contextual menu that drops down with Control+mouse click. It now asks me for my administrator password to do the trash move. (???)
Once the original has been tossed, the file will now move from folder to disktop and back to folder with complete impunity. But if I try this with another .mov file, the process starts all over again.
No extra key combo during the original move gets rid of the + icon.
Permissions were repaired. No change.
Log off was cycled, no change.
Obviously somehow this disk has picked up wierdness when Leopard replaced well-tempered Tiger on it, but where is the checkbox that dumps this odd behavior?
No Right-click on the mighty mouse will bring down the contextual menu at all.Yea! The Mac is back on track!
It took extra innings and a visit to 1 800 APL CARE to get to the bottom of it, but this therapy should be on everyone's A-list: The Install disk's version of Disk Utility is significantly different from any version you can install on your hard drives. Or so it would appear.
Where the Disk Utility can be there for you on two different hard drives connected to the same computer, running it from different drives is not at all the same - in visible results - as running it directly from the OS X Install Disk.
You can have several disks with OS X on them and run Disk Utility on your main startup disk from those, but they won't find all the messy permissions that are gumming up your system.
It took yet another previous back up Restore cycle, an extra clean install, followed immediately by an Install Disk run of Disk Utility's First Aid/Repair Disk Permissions to clear the cobwebs. Frequent re-weedings (after any program installs or upgrades from anybody, including Apple's own) finds more things to fix. Not always, but frequently.
The Install Disk's Disk Utility--it's not just for breakfast any more. -
Hi,
Normally, when right-clicking a file, for example, a pdf, in ID, and selecting a particular program to open that file with (say, AI) would start the chosen program. Lately, things haven't been working as expected, at least in one document. Opening a linked file, either with the right-click on the file or from the links dock, results in some really odd behavior, all ending with the wrong program being chosen. Sometimes, the program is in the list, for whatever reason ID decides that it should be in the list, which is a mystery to me, but sometimes, the program isn't even in the list. Such as, my GIS program. I've tried another document, and it seems to behave ok. I tried restarting the computer, etc., still happens. Any suggestions? Thanks for the time; you folks are always a tremendous help.
PS, if I go to Bridge, everything is smooth, like butter.
dbI'm using CS4, all up to date on a Windows XP SP3 machine dual-core 2.66ghz 4gig RAM, 500 Gig HD. The document itself is pretty low-key. Five placed Word files. I'm zapping the embedded images and replacing with linked originals. Very basic graphics. I'm an archaeologist, so mainly maps and photos, no transparencies, fancy masks, or anything of the like.
Thanks,
db -
I've seen some odd behavior today a couple times when I've tried to edit a message.
The Edit box pops up but not with the text of the message I'm editing, but from an edit much earlier in the day.
The first time it happened, I tried to make an edit, but it wouldn't submit it. It just said there was an unknown error.
The second time, it took the edit but had the old message body and message subject from a completely unrelated thread.
EDIT: I just went in to edit this message and all behaved just fine.
Message Edited by Ravens Fan on 03-12-2009 01:11 PMTest post
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Test post
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derfglhjdflghjd lfghdlfghladhgldaghdfg
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derfglhjdflghjd lfghdlfghladhgldaghdfg
derfglhjdflghjd lfghdlfghladhgldaghdfg
ghladhgldaghdfg
Test post
derfglhjdflghjd lfghdlfghladhgldaghdfg
derfglhjdflghjd lfghdlfghladhgldaghdfg
derfglhjdflghjd lfghdlfghladhgldaghdfg
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derfglhjdflghjd lfghdlfghladhgldaghdfg
derfglhjdflghjd lfghdlfghladhgldaghdfg
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derfglhjdflghjd lfghdlfghladhgldaghdfg
derfglhjdflghjd lfghdlfghladhgldaghdfg
derfglhjdflghjd lfghdlfghladhgldaghdfg
derfglhjdflghjd lfghdlfghladhgldaghdfg
derfglhjdflghjd lfghdlfghladhgldaghdfg
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derfglhjdflghjd lfghdlfghladhgldaghdfg
derfglhjdflghjd lfghdlfghladhgldaghdfg
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Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction -
Again with the odd behavior. I found the code below while studying for a Java certification exam.
************************ START ************************
import java.io.*;
class OutputTest {
public OutputTest() {
super();
public static void main(java.lang.String[] args) throws IOException {
File file=new File("out");
FileOutputStream fout1=new FileOutputStream(file);
FileOutputStream fout2=new FileOutputStream(file);
PrintWriter pw=new PrintWriter(fout1,true);
fout1.write('A');
fout2.write('B');
pw.println("CD");
fout1.close();
fout2.close();
pw.close();
************************ END ************************
The contents of the file "out" after running this code is "BCD". Does anyone know why write access to one file is allowed by more than one output stream and/or writer? I assumed that the file would be locked when opened by fout1. Is this expected behavior?A guess on the behaviour.
Both streams are buffered in java. fout1 writes to its buffer, fout2 writes to its buffer. When fout1 closes its buffer is flushed. When fout2 is closed its buffer is flushed which causes it to overwrite the stuff from fout1.
Why it is allowed is a different matter. Perhaps because it is simply to hard to code or too expensive to check. Or simply forgotten. Or because sometimes this behaviour is desired - for example if both flush at the end of every line, then there is no problem.
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