So, I'm sitting in a hotel in North Carolina that has two levels of wireless -- free and paid. I tried the free, and it's too slow. So, I decided to pay.
But I can't. The system has mapped my mac address to the free sign up, and there's nothing I can do to get it to change.
No problem, I tell myself. Back in the day, I used to spoof my mac address all the time. I'll just change my mac address, reconnect, and hook up using that.
Now, back when I used to do that a lot, I was running Fedora 19, and it was easy:
It was just...
%service NetworkManager stop
%macchanger -a wlo1
%service NetworkManager start
... and voila!
However, this time in Fedora 24, that doesn't work.
Here's what happens:
% ifconfig
eno1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether dc:4a:3e:e3:5f:da txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1 (Local Loopback)
RX packets 18320 bytes 10794663 (10.2 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 18320 bytes 10794663 (10.2 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlo1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 63.140.174.12 netmask 255.255.255.128 broadcast
63.140.174.127
inet6 fe80::825e:9233:a48f:ec prefixlen 64 scopeid 0x20<link>
ether e0:94:67:84:ae:36 txqueuelen 1000 (Ethernet)
RX packets 3671575 bytes 4805208717 (4.4 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1642049 bytes 940283651 (896.7 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Note the "ether e0:94:67:84:ae:36" for wlo1.
Now...
%service NetworkManager stop
Redirecting to /bin/systemctl stop NetworkManager.service
%macchanger -a wlo1
Current MAC: e0:94:67:84:ae:36 (Intel Corporate)
Permanent MAC: e0:94:67:84:ae:36 (Intel Corporate)
[ERROR] Could not change MAC: interface up or insufficient permissions:
Device or resource busy
Hmmm... Well, it worked a couple of years ago. Maybe I have to turn the
interface off completely...
%ifconfig wlo1 down
%macchanger -a wlo1
Current MAC: e0:94:67:84:ae:36 (Intel Corporate)
Permanent MAC: e0:94:67:84:ae:36 (Intel Corporate)
New MAC: 00:1e:9d:ee:9a:79 (Recall Technologies, Inc.)
OK, looks good.
Let's turn it on.
%ifconfig wlo1 up
CAST,MULTICAST> mtu 1500
ether dc:4a:3e:e3:5f:da txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1 (Local Loopback)
RX packets 18400 bytes 10801463 (10.3 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 18400 bytes 10801463 (10.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlo1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:1e:9d:ee:9a:79 txqueuelen 1000 (Ethernet)
RX packets 3672803 bytes 4805318432 (4.4 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1642451 bytes 940340115 (896.7 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Yayy! Looks goot.
So, let's turn Network Manager back on...
%service NetworkManager start
Redirecting to /bin/systemctl start NetworkManager.service
%ifconfig
eno1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether dc:4a:3e:e3:5f:da txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1 (Local Loopback)
RX packets 18420 bytes 10803103 (10.3 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 18420 bytes 10803103 (10.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlo1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 63.140.174.12 netmask 255.255.255.128 broadcast
63.140.174.127
inet6 fe80::825e:9233:a48f:ec prefixlen 64 scopeid 0x20<link>
ether e0:94:67:84:ae:36 txqueuelen 1000 (Ethernet)
RX packets 3673409 bytes 4805359209 (4.4 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1642523 bytes 940351071 (896.7 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Son of a gun. NetworkManger changed it back, it seems. What happens if
I turn it off...
%service NetworkManager stop
Redirecting to /bin/systemctl stop NetworkManager.service
%ifconfig
ifconfig
eno1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether dc:4a:3e:e3:5f:da txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1 (Local Loopback)
RX packets 18436 bytes 10804463 (10.3 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 18436 bytes 10804463 (10.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlo1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:1e:9d:ee:9a:79 txqueuelen 1000 (Ethernet)
RX packets 3673647 bytes 4805375390 (4.4 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1642544 bytes 940357501 (896.7 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
What??? Now the change is reinstated???
So, NetworkManager is ignoring the changes I make. I thought that maybe I could use nmcli to do this. But this is what I get:
%nmcli connection modify wlo1 802-11-wireless.cloned-mac-address 55:44:33:22:11:00
Error: Unknown connection 'wlo1'.
Damn. An interface isn't a connection, apparently... But it's not connected to anything.
OK, I'll connect and see what happens:
`
%nmcli connection modify attwifi 802-11-wireless.cloned-mac-address 55:44:33:22:11:00
Well, that didn't give me an error, but it also didn't actually change the mac address when I did an ifconfig.
So, I know I could disconnect and type in a mac address using the gui for network manager, but I'd like to be able to script this. What am I doing wrong? How can I get NetworkManager to scarf up a mac address I generate either by editing a config file or by using nmcli?
Thanks
billo
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