HT5299 which is my ethernet mac address when in a retina with adapter?

Hi,
I need to get my ethernet mac address, but i have a macboock pro retina displays that only have wireless connection. I bought the gigabit ethernet adapter, but i need the mac address because the University system that will provide me the net connection needs it to allow my computer to the net.
Where can i find it?
Thanks!

Plug the adapter into the MBP-R (*) and go to System Preferences > Network > Thunderbolt Ethernet > Advanced.
(*) You may also have to plug an Ethernet cable into the adapter at least once. Mine has been plugged in, and I didn't check the MAC address before the first time, so I can't tell for sure.

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Changing ethernet MAC address

I would like to change my macbook pro Core2Duo's ethernet MAC address. Has anyone succeded in doing that? how is it done?

Not sure why you would need to, but here yah go:
For anyone who has not noticed it ... you are now able to change the system's Ethernet card MAC adress without any third party software. Just do a:
% sudo ifconfig en0 ether aa:bb:cc:dd:ee:ff
where en0 is the network interface (numbered from en0, en1, en2 ...) and aa:bb:cc:dd:ee:ff is the desired MAC address in hex notation.
Be careful...

Ethernet MAC address on ipod touch?

Hi,
I'm using a iPod Touch 2G (16GB, ordered this summer with a new MacBook Pro), and I'm trying to register the device with my school wireless.
The form that I have to fill out in order to request wireless access for new devices asks for system type (APPLE-IPOD), OS (IPHONE-OS), and the ethernet and wireless MAC addresses (or "ethernet hardware address"/"wireless hardware address"). These two entries can be found on computers in System Profile/Network, where you can find the MAC addresses for Airport and Ethernet.
However, I'm not sure what to do in the case of the iPod. I understand that you can find a MAC address in Settings/Network, but this only shows the Airport MAC address, correct? I can't submit the form without including the Ethernet address, and I can't submit using the same MAC address for both Ethernet/wireless. Is there somewhere else I should be looking for this information, or is this an issue that I have to bring up with the IT office directly?
Your help is greatly appreciated!

whoops, my mistake--I meant that I'd already found General/About/Settings, but the Wi-Fi address there only indicates the equivalent of the Airport MAC address, correct? Where would I find the equivalent of the Ethernet MAC address? (or if the "Wi-Fi address" on the iPod touch is equivalent to the Ethernet MAC address, what is the wireless MAC address?

I accidentally in put the wrong email address when attempting to register with iCloud. As such, I can't verify the account with that email address because it does not exist. What should I do?

I accidentally input the wrong email address when attempting to register with iCloud. Therefore, I can't verify the account because the email address that I accidentally used does not exist. Can someone help me figure a way out of this because there does not appear to be a way to edit the email address?

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Simple : Which src MAC address when WLC bridges 802.11to 802.3 ?

When a WLC bridges 802.11 to 802.3, after extracting the original 802.11 frame from LWAPP, does it put the 802.11 senders
MAC address as the source addr in the new 802.3 frame ?
Or does it put the WLC's AP manager interface ? (Or the WLC's Management Interface) ?
If you refer to :-
http://www.cisco.com/en/US/docs/wireless/technology/controller/deployment/guide/dep.html#wp1050985
One of the bullet points reads :-
After processing the 802.11 MAC header, the WLC extracts the payload (the IP packet from Host A), encapsulates it into an Ethernet frame, and then forwards the frame onto the appropriate wired network, typically adding an 802.1Q VLAN tag.
Should it include :-
and adds the MAC address of the Wireless client as the SOURCE MAC ADDRESS to the outgoing Ethernet Frame??
Also, will an ARP for a wireless client yeild the mac address of the WLC or the AP ???
Thanks

It looks like the src address of the original 802.11 client goes to the 802.3 frame as the source.
So am I correct in thinking that (in a flat topology, no L3 routing) the WLC will appear as to an attached switchport as trunk
(not necessarly 802.1q, but usually) with multiple mac address learned from it.
Any host on the LAN will send a packet for DEST MAC, which will eventually be SWITCHED (via L2 switching), upto the WLC.
The WLC will then send it over lwapp to the AP, and the AP will send it to the client.
But as far as the mac-address-table is concerned of any switch directly attached to the WLC, it will see
all client MAC address for ALL wireless stations for ALL AP's... Correct ?
Thanks

Ethernet MAC address has changed and I can no longer connect to the network

I have a new iMac, 21.5" running 10.6.4. It was purchased in the past month.
I am using it on an ethernet network and using DHCP to obtain the address. It has been working for the past few weeks. I turned it on today and it is failing to connect. After some digging around, it seems that the MAC address (Ethernet ID) has been reset to 00:10:18:00:00:00. This is different to the one it has been using last week.
I have not changed any network settings. Airport is working fine.
If I pull out the ethernet cable and reinsert, the machine tries to obtain an IP address. After a while, it returns with a self-assigned IP Address.
Last week, I did notice that it was taking a relatively long time (a minute or so) to obtain the IP address over ethernet. Plugging the same ethernet cable in a macbook, I am able to obtain the IP address for the macbook much more quickly.
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Why would the machine have reset the MAC address anyway?
Regards,
Neil

Dear all,
I am having the same problem with a new MacBook Pro, bought end of October - for me it became apparent for software (Matlab, Comsol) that are registered with a licence file which was created based on the MAC address, and also when trying to register the computer to the company network. That software will only work those times that the computer "knows" its real MAC. Also, I found that audible audio books, managed through itunes, will not synchronize with the ipod at those times when the MAC address is at the producer's default (00:10:15:00:00). I never had network issues other than this computer registration, - no probs at home or elsewhere - , so it will depend on the individual setup which issue users observe.
I have had long phone discussions with different Apple support people, they have done checks based on Capture Data that I sent to them via email, etc.. They can't find the problem in the software/setup and they advised me to go the Genius Bar and have those guys look at the computer's guts.
Restarting sometimes did set the MAC to the real one, also running the code that someone suggested in Terminal sometimes helped.
Other than that, looking through the web, it does not seem to be an Apple-unique problem, but certainly one would like to see support to take care of that issue for Macs soon.
Also, thanks a lot for this thread! Otherwise the support guys on the phone would not have believed my : "the Mac address changes on a daily basis" and would just have brushed me off.
All the best,
Susanne
Message was edited by: semperula

Changing ethernet Mac address in Leopard 10.5.3

I am trying to change the Mac address (ethernet) of my MacBook Pro, with Leopard 10.5.3. It used to work with Tiger, with the regular command (in Terminal): sudo ifconfig en0 lladdr 00:00:00:00:00 (where the zeros represent the new Mac address). However, since I've installed 10.5.3, this doesn't work. I'd appreciate any help.
Thanks!

Thank you both. I looked at the ChangeMac program, and it looks like it should work. I simply have this problem: I can not use the Internet on my laptop, because in order to use it, I need to change the Mac address first. I am in Eastern Europe for the summer, which is why I have this problem. Do you happen to know a prompt or command I could put it?
Thanks!

Hyper-V on Windows 8.1 is messing with MAC address when sharing my Wifi card

Hello,
I'm using Hyper-V on Windows 8.1 to build a complete SharePoint Development environment.
All of my VM are following this scheme:
a "local" private network shared between the host and all VM, using a static IP address plan (192.168.10.0/24)
a RJ45 external network, attached to my physical ethernet card. This network uses DHCP protocol
a WIFI external network, attached to my wireless network card. This network also use DHCP protocol
When plugged on the ethernet card, I have no issue. Both the host and the guest OSes are getting a valid IP address.
However, when I try to connect on the wireless card, I get some weird errors. Actually, my guest OS are getting the same IP address than the host. This issue an IP address conflict.
Someone else got the same kind of behavior : Windows 8.1
Hyper-V : IP address conflict on Guest OS
I've checked my MAC address plan, and it seems correct.
Using WireShark (a tool I'm not used to I admit), I can see that all DHCP request of the guest os, are sending the host MAC address, and not the guest' one.
Does anyone have an answer to this weird behavior?
Thanks,
steve
Paying back the community for its help by writing articles :
Have a Nice Day.Net Blog

Hi Steve,
Please try the following step and then retry ipconfig /renew in your VM :
1. Configure the WI-FI router to assign a static IP address to the host’s wireless network adapter(the IP should not be in DHCP Pool).
2. On the host, configure the wireless network adapter to use a static IP address. The IP address will be the same address configured in step 1.
3. Using Hyper-V Manager, create an external network switch that is bound to the host’s wireless network adapter
Hope this helps
Best Regards
Elton Ji
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.
Hi Elton,
First of all, thanks for your effort.
I will try your suggestion, but even if it works, it won't solve the actual root the issue.
Moreover, it is only relevant if I can control every wireless network I'm connecting to. What about if I travel and I connect with a customer wireless network? what about an hotel wireless network?
As I said, wireshark shows me DHCP requests using the wrong IP address. I strongly believe there's a bug somewhere between the wireless card driver and Hyper-v Mac-Bridge service.
Steve
Paying back the community for its help by writing articles :
Have a Nice Day.Net Blog

Ethernet Mac Address suddenly changed

Hello all.
I experienced a really unexpected issue today when I connected my laptop as I do every day when I get to work, but found that I had no access to any of my servers / sites that I usually connect to.
When I checked my network configuration on the Network System Preferences pane, noticed that my IP (assigned by DHCP) has changed... As if this was not enough, I reviewed the "Advanced..." settings and then the "Hardware" tab to check my mac address and noticed that the one being showed, did not match the one I had saved on my records.
I'm very aware that there are software that changes the NICs mac address at will, but I have not installed any of this software on my machine.
As additional information, I connect my laptop through an Avaya telephone / extention and it has been resetted recently because I found that my telephone had an error showing on its display screen and I incline to think that the issue with my phone may have had something to do with my mac address change.
For the record, the new mac address assigned is 00:01:01:22:1d:64
Please any help will be really appreciated.
Thank you so much.
Renato

Another odd behaviour yesterday:
As many of other ML users out there, I'm experiencing frequent crashes when I quicklook a link inside Apple Mail. That was the case yesterday when I tried to preview a link without opening Safari, my Macbook panicked and rebooted... The surprise was that when the machine was up again, guess what? The ethernet's mac address changed again but this time went back to it's original number
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I examined the console logs but to be honest, I don't even know what or where to look for...
A hardware test will be a start.

Cannot read MAC address when Installing the Java workplace

Hi All,
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ERROR 2008-03-25 11:50:53
CJS-30059 Java EE Engine configuration error.<br>DIAGNOSIS: Error when configuring J2EE Engine. See output of logfile umconfigurator.log: 'Mar 25, 2008 11:50:49... Info: UME configurator (com.sap.security.tools.UMConfiguratorLoad) called for action "setup"PerfTimes : loadNativeLayer: loading jperflib failed. no jperflib in java.library.pathjava.text.ParseException: cannot read MAC address from [
Windows IP Configuration
        Host Name . . . . . . . . . . . . : IDSMYN
        Primary Dns Suffix . . . . . . . :
        Node Type . . . . . . . . . . . . : Hybrid
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter ] using ipconfig /all     at com.sap.bc.krn.perf.PerfTimes.windowsParseMacAddress(PerfTimes.java:1173)     at com.sap.bc.krn.perf.PerfTimes.getMacAddress(PerfTimes.java:289)     at com.sap.bc.krn.perf.PerfTimes.getMacAddress(PerfTimes.java:260)     at com.sap.tc.logging.UID.getnodeaddress(UID.java:303)     at com.sap.tc.logging.UID.<clinit>(UID.java:59)     at com.sap.tc.logging.GUId.toString(GUId.java:46)     at java.lang.String.valueOf(String.java:2131)     at java.lang.StringBuffer.append(StringBuffer.java:370)     at com.sap.tc.logging.ListFormatter.format(ListFormatter.java:215)     at com.sap.tc.logging.Log.writeInt(Log.java:864)     at com.sap.tc.logging.Log.writeInternalByAPI(Log.java:930)     at com.sap.tc.logging.LogController.writeToLogs(LogController.java:3160)     at com.sap.tc.logging.LogController.messageInternal(LogController.java:2280)     at com.sap.tc.logging.LogController.logInt(LogController.java:2477)     at com.sap.tc.logging.LogController.logInt(LogController.java:2432)     at com.sap.tc.logging.LogController.logIntByAPI(LogController.java:2231)     at com.sap.tc.logging.APILogger.instrumentIntByAPI(APILogger.java:59)     at com.sap.tc.logging.LogController.addLog(LogController.java:1320)     at com.sap.tc.logging.PropertiesConfigurator.configure(PropertiesConfigurator.java:1119)     at com.sap.engine.core.configuration.impl.Logging.<init>(Logging.java:54)     at com.sap.engine.core.configuration.bootstrap.ConfigurationManagerBootstrapImpl.init(ConfigurationManagerBootstrapImpl.java:176)     at com.sap.engine.core.configuration.bootstrap.ConfigurationManagerBootstrapImpl.<init>(ConfigurationManagerBootstrapImpl.java:60)     at com.sap.security.tools.UMConfigModel.<init>(UMConfigModel.java:79)     at com.sap.security.tools.UMConfiguratorLoad.main(UMConfiguratorLoad.java:179)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)     at java.lang.reflect.Method.invoke(Method.java:324)     at com.sap.engine.offline.OfflineToolStart.main(OfflineToolStart.java:81)***************************************************************                                                         **** getMacAddress() failed                                  ****                                                         **** trying to get mac address from                          **** file C:\Program Files\sapinst_instdir\NW04S\SYSTEM\DEVWP\MAXDB\MAC_ADDRESS**                                                         **************************************************************Exception : CreateProcess: cat MAC_ADDRESS error=2**************************************************************                                                         **** getMacAddress() failed                                  ****                                                         **** failed to get mac address with Runtime.getRuntime().exec( cat MAC_ADDRESS )**                                                         **************************************************************java.text.ParseException: cannot read MAC address for IDSMYN from [] using cat MAC_ADDRESS     at com.sap.bc.krn.perf.PerfTimes.voidParseMacAddress(PerfTimes.java:1326)     at com.sap.bc.krn.perf.PerfTimes.getMacAddress(PerfTimes.java:571)     at com.sap.bc.krn.perf.PerfTimes.getMacAddress(PerfTimes.java:260)     at com.sap.tc.logging.UID.getnodeaddress(UID.java:303)     at com.sap.tc.logging.UID.<clinit>(UID.java:59)     at com.sap.tc.logging.GUId.toString(GUId.java:46)     at java.lang.String.valueOf(String.java:2131)     at java.lang.StringBuffer.append(StringBuffer.java:370)     at com.sap.tc.logging.ListFormatter.format(ListFormatter.java:215)     at com.sap.tc.logging.Log.writeInt(Log.java:864)     at com.sap.tc.logging.Log.writeInternalByAPI(Log.java:930)     at com.sap.tc.logging.LogController.writeToLogs(LogController.java:3160)     at com.sap.tc.logging.LogController.messageInternal(LogController.java:2280)     at com.sap.tc.logging.LogController.logInt(LogController.java:2477)     at com.sap.tc.logging.LogController.logInt(LogController.java:2432)     at com.sap.tc.logging.LogController.logIntByAPI(LogController.java:2231)     at com.sap.tc.logging.APILogger.instrumentIntByAPI(APILogger.java:59)     at com.sap.tc.logging.LogController.addLog(LogController.java:1320)     at com.sap.tc.logging.PropertiesConfigurator.configure(PropertiesConfigurator.java:1119)     at com.sap.engine.core.configuration.impl.Logging.<init>(Logging.java:54)     at com.sap.engine.core.configuration.bootstrap.ConfigurationManagerBootstrapImpl.init(ConfigurationManagerBootstrapImpl.java:176)     at com.sap.engine.core.configuration.bootstrap.ConfigurationManagerBootstrapImpl.<init>(ConfigurationManagerBootstrapImpl.java:60)     at com.sap.security.tools.UMConfigModel.<init>(UMConfigModel.java:79)     at com.sap.security.tools.UMConfiguratorLoad.main(UMConfiguratorLoad.java:179)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)     at java.lang.reflect.Method.invoke(Method.java:324)     at com.sap.engine.offline.OfflineToolStart.main(OfflineToolStart.java:81)**************************************************************                                                         **** Suggested workaround:                                   ****                                                         **** create file C:\Program Files\sapinst_instdir\NW04S\SYSTEM\DEVWP\MAXDB\MAC_ADDRESS** with hostname and mac address in the following format: **** IDSMYN xx:xx:xx:xx:xx:xx**                                                         ***************************************************************java.text.ParseException: cannot read MAC address from [
Windows IP Configuration
        Host Name . . . . . . . . . . . . : IDSMYN
        Primary Dns Suffix . . . . . . . :
        Node Type . . . . . . . . . . . . : Hybrid
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter ] using ipconfig /all     at com.sap.bc.krn.perf.PerfTimes.windowsParseMacAddress(PerfTimes.java:1173)     at com.sap.bc.krn.perf.PerfTimes.getMacAddress(PerfTimes.java:289)     at com.sap.bc.krn.perf.PerfTimes.getMacAddress(PerfTimes.java:260)     at com.sap.tc.logging.UID.getnodeaddress(UID.java:303)     at com.sap.tc.logging.UID.<clinit>(UID.java:59)     at com.sap.tc.logging.GUId.toString(GUId.java:46)     at java.lang.String.valueOf(String.java:2131)     at java.lang.StringBuffer.append(StringBuffer.java:370)     at com.sap.tc.logging.ListFormatter.format(ListFormatter.java:215)     at com.sap.tc.logging.Log.writeInt(Log.java:864)     at com.sap.tc.logging.Log.writeInternalByAPI(Log.java:930)     at com.sap.tc.logging.LogController.writeToLogs(LogController.java:3160)     at com.sap.tc.logging.LogController.messageInternal(LogController.java:2280)     at com.sap.tc.logging.LogController.logInt(LogController.java:2477)     at com.sap.tc.logging.LogController.logInt(LogController.java:2432)     at com.sap.tc.logging.LogController.logIntByAPI(LogController.java:2231)     at com.sap.tc.logging.APILogger.instrumentIntByAPI(APILogger.java:59)     at com.sap.tc.logging.LogController.addLog(LogController.java:1320)     at com.sap.tc.logging.PropertiesConfigurator.configure(PropertiesConfigurator.java:1119)     at com.sap.engine.core.configuration.impl.Logging.<init>(Logging.java:54)     at com.sap.engine.core.configuration.bootstrap.ConfigurationManagerBootstrapImpl.init(ConfigurationManagerBootstrapImpl.java:176)     at com.sap.engine.core.configuration.bootstrap.ConfigurationManagerBootstrapImpl.<init>(ConfigurationManagerBootstrapImpl.java:60)     at com.sap.security.tools.UMConfigModel.<init>(UMConfigModel.java:79)     at com.sap.security.tools.UMConfiguratorLoad.main(UMConfiguratorLoad.java:179)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)     at java.lang.reflect.Method.invoke(Method.java:324)     at com.sap.engine.offline.OfflineToolStart.main(OfflineToolStart.java:81)Mar 25, 2008 11:50:53... Info: Using SID "J11" for secure storageMar 25, 2008 11:50:53... Info: Created group entry in secure storage: Group "Administrators", roles "Administrator"Mar 25, 2008 11:50:53... Info: Created group entry in secure storage: Group "Guests", roles ""Mar 25, 2008 11:50:53... Info: Created user entry in secure storage: User "Administrator", password set, parent groups "Administrators", locked "false", roles ""Mar 25, 2008 11:50:53... Info: Created user entry in secure storage: User "Guest", password not set, parent groups "Guests", locked "true", roles ""Mar 25, 2008 11:50:53... Info: Inserted administrator user data into secure storage: "Administrator"Mar 25, 2008 11:50:53... Info: Setting UME property "ume.login.guest_user.uniqueids" to "Guest"Mar 25, 2008 11:50:53... Info: Setting UME property "ume.persistence.data_source_configuration" to "dataSourceConfiguration_database_only.xml"Mar 25, 2008 11:50:53... Warning: UME property "ume.authenticationFactory" shall be set, but does not existMar 25, 2008 11:50:53... Info: Setting UME property "ume.logonAuthenticationFactory" to "com.sap.security.core.logon.imp.SAPJ2EEAuthenticator"Mar 25, 2008 11:50:53... Info: Setting UME property "ume.login.context" to "ticket"Mar 25, 2008 11:50:53... Info: Setting UME property "ume.login.context.default" to "ticket"Mar 25, 2008 11:50:53... Info: Setting UME property "login.ticket_keyalias" to "SAPLogonTicketKeypair"Mar 25, 2008 11:50:53... Info: Setting UME property "login.ticket_keystore" to "TicketKeystore"Mar 25, 2008 11:50:53... Info: Setting UME property "login.ticket_lifetime" to "8"Mar 25, 2008 11:50:53... Info: Setting UME property "ume.superadmin.activated" to "FALSE"Mar 25, 2008 11:50:53... Info: Set role references for jndi_all_operations in path "security/configurations/service.naming/security/roles/UME User Store/jndi_all_operations"Mar 25, 2008 11:50:53... Info: Set role references for jndi_get_initial_context in path "security/configurations/service.naming/security/roles/UME User Store/jndi_get_initial_context"Mar 25, 2008 11:50:53... Info: Set role references for telnet in path "security/configurations/service.telnet/security/roles/UME User Store/telnet_login"Mar 25, 2008 11:50:53... Info: Added group "Administrators" to path "security/roles/UME User Store/administrators/groups"Mar 25, 2008 11:50:53... Info: Added group "Guests" to path "security/roles/UME User Store/guests/groups"Mar 25, 2008 11:50:53... Info: Added group "Everyone" to path "security/roles/UME User Store/all/groups"Mar 25, 2008 11:50:53... Info: Changing JMS username in path "jms_provider/DEFAULT/default/conn_factories/XATopicConnectionFactory" to "Administrator"Mar 25, 2008 11:50:53... Info: Changing JMS username in path "jms_provider/DEFAULT/default/conn_factories/QueueConnectionFactory" to "Administrator"Mar 25, 2008 11:50:53... Info: Changing JMS username in path "jms_provider/DEFAULT/default/conn_factories/TopicConnectionFactory" to "Administrator"Mar 25, 2008 11:50:53... Info: Changing JMS username in path "jms_provider/DEFAULT/default/conn_factories/XAQueueConnectionFactory" to "Administrator"Mar 25, 2008 11:50:53... Info: Operation executed successfullyMar 25, 2008 11:50:53... Info: Committed changes to configuration managerMar 25, 2008 11:50:53... Info: Leaving with return code 0'.
Anyone knows how to solve it?
Thanks in advance.
YiNing

Posting this in the Netweaver Administrator section may yield better results.

Can sites know about my computers physical address or mac address when I use firefox 4

I want to know that does firefox expose my computers mac address or physical address to any site if that tries??

You have quite a few outdated plugins installed which potentially exposes your system to exploits.
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That IP address belongs to Comcast. Does that ring any bells?

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I cant seem to get this to work...
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Message was edited by: navilon

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In this state you can get the MAC address by typing
.idprom(dot-idprom)
Martin

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Thanks for answering,
however I miss what to send you: The address book is missing most of my contacts (they were there, before), but if I send a mail to one of those missing contacts Thunderbird attach the correct address without my intervention: funny. Mau be a virus did that, bu how can I recover the missing address book (hidden somewhere, certainly). I cannot show in a screen copy the facts I describe here. Anyway I enclose the screenshot of the opening of the actual address book. Please ask me any useful question on the above.
Again thank and greetings,
giancarlo.

HT5299 which is my ethernet mac address when in a retina with adapter?

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