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How to assign unique MAC addresses to sub-interfaces
Not able to connect to local networkCompletely disappeared Wireless14.04 no internet connection when I up the bridge interface (for LXC container)Connected to ethernet but no internet or outgoing connectionsNo internet access via ethernet, while wifi works (82579lm, ubuntu 14.04)Dual NIC not workingNo pings no package locations on server
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I'm in a corporate environment with a DHCP server with static assignments for my server. I have one physical nic with several sub-interfaces. I statically assign different MAC addresses for each sub-interface to get another IP address from the DHCP server. For some reason, my server is not taking the static MAC addresses. You'll notice that ifconfig shows each interface with the same MAC.
How do I assign unique MAC addresses to my sub-interfaces?
$ cat interfaces
auto lo
iface lo inet loopback
auto eth0:1
iface eth0:1 inet dhcp
hwaddress ether 00:0c:29:31:24:fa
hostname gwrt-test
client gwrt-test
auto eth0:2
iface eth0:2 inet dhcp
hwaddress ether 00:0c:29:31:25:fa
hostname gwrt-test2
client gwrt-test2
$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:329737 errors:0 dropped:0 overruns:0 frame:0
TX packets:121645 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:69228791 (69.2 MB) TX bytes:63531749 (63.5 MB)
Interrupt:16
eth0:1 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa <- should be 24:fa
inet addr:10.203.102.29 Bcast:10.203.102.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
eth0:2 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa
inet addr:10.203.102.32 Bcast:10.203.102.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
networking server ethernet dhcp
edited Nov 4 '13 at 18:20
Web-E
18.2k11 gold badges45 silver badges90 bronze badges
asked Nov 4 '13 at 18:17
Jason TookeJason Tooke
11 silver badge2 bronze badges
add a comment |
I'm in a corporate environment with a DHCP server with static assignments for my server. I have one physical nic with several sub-interfaces. I statically assign different MAC addresses for each sub-interface to get another IP address from the DHCP server. For some reason, my server is not taking the static MAC addresses. You'll notice that ifconfig shows each interface with the same MAC.
How do I assign unique MAC addresses to my sub-interfaces?
$ cat interfaces
auto lo
iface lo inet loopback
auto eth0:1
iface eth0:1 inet dhcp
hwaddress ether 00:0c:29:31:24:fa
hostname gwrt-test
client gwrt-test
auto eth0:2
iface eth0:2 inet dhcp
hwaddress ether 00:0c:29:31:25:fa
hostname gwrt-test2
client gwrt-test2
$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:329737 errors:0 dropped:0 overruns:0 frame:0
TX packets:121645 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:69228791 (69.2 MB) TX bytes:63531749 (63.5 MB)
Interrupt:16
eth0:1 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa <- should be 24:fa
inet addr:10.203.102.29 Bcast:10.203.102.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
eth0:2 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa
inet addr:10.203.102.32 Bcast:10.203.102.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
networking server ethernet dhcp
edited Nov 4 '13 at 18:20
Web-E
18.2k11 gold badges45 silver badges90 bronze badges
asked Nov 4 '13 at 18:17
Jason TookeJason Tooke
11 silver badge2 bronze badges
If you're thinking of going to the trouble of setting the MAC address explicitly for each interface, and as you say the addresses handed out by the dhcp server are static and reserved for use by your server, why not just configure them statically instead of using dhcp?
– roadmr
Nov 4 '13 at 18:29
Company politics. The server is for development and sitting on my desk... but yes, static would be ideal.
– Jason Tooke
Nov 4 '13 at 19:35
add a comment |
I'm in a corporate environment with a DHCP server with static assignments for my server. I have one physical nic with several sub-interfaces. I statically assign different MAC addresses for each sub-interface to get another IP address from the DHCP server. For some reason, my server is not taking the static MAC addresses. You'll notice that ifconfig shows each interface with the same MAC.
How do I assign unique MAC addresses to my sub-interfaces?
$ cat interfaces
auto lo
iface lo inet loopback
auto eth0:1
iface eth0:1 inet dhcp
hwaddress ether 00:0c:29:31:24:fa
hostname gwrt-test
client gwrt-test
auto eth0:2
iface eth0:2 inet dhcp
hwaddress ether 00:0c:29:31:25:fa
hostname gwrt-test2
client gwrt-test2
$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:329737 errors:0 dropped:0 overruns:0 frame:0
TX packets:121645 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:69228791 (69.2 MB) TX bytes:63531749 (63.5 MB)
Interrupt:16
eth0:1 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa <- should be 24:fa
inet addr:10.203.102.29 Bcast:10.203.102.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
eth0:2 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa
inet addr:10.203.102.32 Bcast:10.203.102.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
networking server ethernet dhcp
edited Nov 4 '13 at 18:20
Web-E
18.2k11 gold badges45 silver badges90 bronze badges
asked Nov 4 '13 at 18:17
Jason TookeJason Tooke
11 silver badge2 bronze badges
I'm in a corporate environment with a DHCP server with static assignments for my server. I have one physical nic with several sub-interfaces. I statically assign different MAC addresses for each sub-interface to get another IP address from the DHCP server. For some reason, my server is not taking the static MAC addresses. You'll notice that ifconfig shows each interface with the same MAC.
How do I assign unique MAC addresses to my sub-interfaces?
$ cat interfaces
auto lo
iface lo inet loopback
auto eth0:1
iface eth0:1 inet dhcp
hwaddress ether 00:0c:29:31:24:fa
hostname gwrt-test
client gwrt-test
auto eth0:2
iface eth0:2 inet dhcp
hwaddress ether 00:0c:29:31:25:fa
hostname gwrt-test2
client gwrt-test2
$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:329737 errors:0 dropped:0 overruns:0 frame:0
TX packets:121645 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:69228791 (69.2 MB) TX bytes:63531749 (63.5 MB)
Interrupt:16
eth0:1 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa <- should be 24:fa
inet addr:10.203.102.29 Bcast:10.203.102.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
eth0:2 Link encap:Ethernet HWaddr 00:0c:29:31:25:fa
inet addr:10.203.102.32 Bcast:10.203.102.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
networking server ethernet dhcp
networking server ethernet dhcp
edited Nov 4 '13 at 18:20
Web-E
18.2k11 gold badges45 silver badges90 bronze badges
asked Nov 4 '13 at 18:17
Jason TookeJason Tooke
11 silver badge2 bronze badges
edited Nov 4 '13 at 18:20
Web-E
18.2k11 gold badges45 silver badges90 bronze badges
asked Nov 4 '13 at 18:17
Jason TookeJason Tooke
11 silver badge2 bronze badges
edited Nov 4 '13 at 18:20
Web-E
18.2k11 gold badges45 silver badges90 bronze badges
edited Nov 4 '13 at 18:20
Web-E
18.2k11 gold badges45 silver badges90 bronze badges
edited Nov 4 '13 at 18:20
Web-E
18.2k11 gold badges45 silver badges90 bronze badges
18.2k11 gold badges45 silver badges90 bronze badges
asked Nov 4 '13 at 18:17
Jason TookeJason Tooke
11 silver badge2 bronze badges
asked Nov 4 '13 at 18:17
Jason TookeJason Tooke
11 silver badge2 bronze badges
asked Nov 4 '13 at 18:17
Jason TookeJason Tooke
11 silver badge2 bronze badges
11 silver badge2 bronze badges
If you're thinking of going to the trouble of setting the MAC address explicitly for each interface, and as you say the addresses handed out by the dhcp server are static and reserved for use by your server, why not just configure them statically instead of using dhcp?
– roadmr
Nov 4 '13 at 18:29
Company politics. The server is for development and sitting on my desk... but yes, static would be ideal.
– Jason Tooke
Nov 4 '13 at 19:35
add a comment |
If you're thinking of going to the trouble of setting the MAC address explicitly for each interface, and as you say the addresses handed out by the dhcp server are static and reserved for use by your server, why not just configure them statically instead of using dhcp?
– roadmr
Nov 4 '13 at 18:29
Company politics. The server is for development and sitting on my desk... but yes, static would be ideal.
– Jason Tooke
Nov 4 '13 at 19:35
If you're thinking of going to the trouble of setting the MAC address explicitly for each interface, and as you say the addresses handed out by the dhcp server are static and reserved for use by your server, why not just configure them statically instead of using dhcp?
– roadmr
Nov 4 '13 at 18:29
If you're thinking of going to the trouble of setting the MAC address explicitly for each interface, and as you say the addresses handed out by the dhcp server are static and reserved for use by your server, why not just configure them statically instead of using dhcp?
– roadmr
Nov 4 '13 at 18:29
Company politics. The server is for development and sitting on my desk... but yes, static would be ideal.
– Jason Tooke
Nov 4 '13 at 19:35
Company politics. The server is for development and sitting on my desk... but yes, static would be ideal.
– Jason Tooke
Nov 4 '13 at 19:35
add a comment |
3 Answers
3
active
oldest
votes
You can install macchanger 
Then execute like following,
sudo macchanger --mac 00:11:22:33:44:55 <interface_name>
More details
answered Nov 4 '13 at 18:23
Web-EWeb-E
18.2k11 gold badges45 silver badges90 bronze badges
add a comment |
Multimac can do this. (http://www.primianotucci.com/os/multimac)
Alternatively you can use "ip link" to add veth interfaces.
In both methods you must then bridge veth0 to eth0 using brctl (bridge-utils).
Each interface (tapX for multimac or vethX for veth) can then have custom mac addresses
(ifconfig hw ether xx:xx:xx:xx:xx:xx, interface should be down.)
answered May 6 '14 at 16:24
olivervbkolivervbk
1112 bronze badges
add a comment |
You can use following commands on linux machines.
ifconfig eth1.2 down
ifconfig eth1.2 hw ether 00:00:00:02:03:04
ifconfig eth1.2 up
answered Jun 1 '18 at 7:54
Nagesh HSNagesh HS
63 bronze badges
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can install macchanger
Then execute like following,
sudo macchanger --mac 00:11:22:33:44:55 <interface_name>
More details
answered Nov 4 '13 at 18:23
Web-EWeb-E
18.2k11 gold badges45 silver badges90 bronze badges
add a comment |
You can install macchanger
Then execute like following,
sudo macchanger --mac 00:11:22:33:44:55 <interface_name>
More details
answered Nov 4 '13 at 18:23
Web-EWeb-E
18.2k11 gold badges45 silver badges90 bronze badges
add a comment |
You can install macchanger
Then execute like following,
sudo macchanger --mac 00:11:22:33:44:55 <interface_name>
More details
answered Nov 4 '13 at 18:23
Web-EWeb-E
18.2k11 gold badges45 silver badges90 bronze badges
You can install macchanger
Then execute like following,
sudo macchanger --mac 00:11:22:33:44:55 <interface_name>
More details
answered Nov 4 '13 at 18:23
Web-EWeb-E
18.2k11 gold badges45 silver badges90 bronze badges
answered Nov 4 '13 at 18:23
Web-EWeb-E
18.2k11 gold badges45 silver badges90 bronze badges
answered Nov 4 '13 at 18:23
Web-EWeb-E
18.2k11 gold badges45 silver badges90 bronze badges
answered Nov 4 '13 at 18:23
Web-EWeb-E
18.2k11 gold badges45 silver badges90 bronze badges
18.2k11 gold badges45 silver badges90 bronze badges
add a comment |
add a comment |
Multimac can do this. (http://www.primianotucci.com/os/multimac)
Alternatively you can use "ip link" to add veth interfaces.
In both methods you must then bridge veth0 to eth0 using brctl (bridge-utils).
Each interface (tapX for multimac or vethX for veth) can then have custom mac addresses
(ifconfig hw ether xx:xx:xx:xx:xx:xx, interface should be down.)
answered May 6 '14 at 16:24
olivervbkolivervbk
1112 bronze badges
add a comment |
Multimac can do this. (http://www.primianotucci.com/os/multimac)
Alternatively you can use "ip link" to add veth interfaces.
In both methods you must then bridge veth0 to eth0 using brctl (bridge-utils).
Each interface (tapX for multimac or vethX for veth) can then have custom mac addresses
(ifconfig hw ether xx:xx:xx:xx:xx:xx, interface should be down.)
answered May 6 '14 at 16:24
olivervbkolivervbk
1112 bronze badges
add a comment |
Multimac can do this. (http://www.primianotucci.com/os/multimac)
Alternatively you can use "ip link" to add veth interfaces.
In both methods you must then bridge veth0 to eth0 using brctl (bridge-utils).
Each interface (tapX for multimac or vethX for veth) can then have custom mac addresses
(ifconfig hw ether xx:xx:xx:xx:xx:xx, interface should be down.)
answered May 6 '14 at 16:24
olivervbkolivervbk
1112 bronze badges
Multimac can do this. (http://www.primianotucci.com/os/multimac)
Alternatively you can use "ip link" to add veth interfaces.
In both methods you must then bridge veth0 to eth0 using brctl (bridge-utils).
Each interface (tapX for multimac or vethX for veth) can then have custom mac addresses
(ifconfig hw ether xx:xx:xx:xx:xx:xx, interface should be down.)
answered May 6 '14 at 16:24
olivervbkolivervbk
1112 bronze badges
answered May 6 '14 at 16:24
olivervbkolivervbk
1112 bronze badges
answered May 6 '14 at 16:24
olivervbkolivervbk
1112 bronze badges
answered May 6 '14 at 16:24
olivervbkolivervbk
1112 bronze badges
1112 bronze badges
add a comment |
add a comment |
You can use following commands on linux machines.
ifconfig eth1.2 down
ifconfig eth1.2 hw ether 00:00:00:02:03:04
ifconfig eth1.2 up
answered Jun 1 '18 at 7:54
Nagesh HSNagesh HS
63 bronze badges
add a comment |
You can use following commands on linux machines.
ifconfig eth1.2 down
ifconfig eth1.2 hw ether 00:00:00:02:03:04
ifconfig eth1.2 up
answered Jun 1 '18 at 7:54
Nagesh HSNagesh HS
63 bronze badges
add a comment |
You can use following commands on linux machines.
ifconfig eth1.2 down
ifconfig eth1.2 hw ether 00:00:00:02:03:04
ifconfig eth1.2 up
answered Jun 1 '18 at 7:54
Nagesh HSNagesh HS
63 bronze badges
You can use following commands on linux machines.
ifconfig eth1.2 down
ifconfig eth1.2 hw ether 00:00:00:02:03:04
ifconfig eth1.2 up
answered Jun 1 '18 at 7:54
Nagesh HSNagesh HS
63 bronze badges
answered Jun 1 '18 at 7:54
Nagesh HSNagesh HS
63 bronze badges
answered Jun 1 '18 at 7:54
Nagesh HSNagesh HS
63 bronze badges
answered Jun 1 '18 at 7:54
Nagesh HSNagesh HS
63 bronze badges
63 bronze badges
add a comment |
add a comment |
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If you're thinking of going to the trouble of setting the MAC address explicitly for each interface, and as you say the addresses handed out by the dhcp server are static and reserved for use by your server, why not just configure them statically instead of using dhcp?
– roadmr
Nov 4 '13 at 18:29
Company politics. The server is for development and sitting on my desk... but yes, static would be ideal.
– Jason Tooke
Nov 4 '13 at 19:35