Use network bridge on Laptop

Hi,
on my Desktop PC I use a bridge to be able to use VMs that are automatically integrated in the network.
I wanted to have the same setup on my laptop to have a as similar as possible environment.
However I failed to do so: I currently use NetworkManager to manage different WiFi Profiles. My first idea was to create a bridge with netctl, attach ethernet and wlan NIC to it and run dhcpcd on it. Then I tried to disable automatic IP (i.e. DHCP) on the network profiles. However I could not get it to work, dhcpcd always reported a timeout.
I think it would be easier and less error prone (some networks might combine wireless authentication and IP allocation, e.g. eduroam?) to have NetworkManager take care of the IP addresses and simply attach an bridge to the device that VMs or containers can attach to. Is this possible somehow?

This will not work properly because I switch networks regularly.
There are two solutions I`ve come up with
1.: Use etables to mask the MAC address for outgoing packets (NAT on OSI Layer 2) as described on the debian wiki
2.: Do normal NAT
I have yet to try those, I will first try to setup etables, this will allow to copy the setup from my desktop PC. If that wont work I use option 2.
Last edited by SpacePirate (2015-01-18 15:52:33)

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BradleyBrandon wrote:
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Hello,
After rebooting with the upgraded systemd (208-11 -> 210-2) by bridge could not start.
journal
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# cat /etc/systemd/system/[email protected]
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Last edited by aya (2014-03-11 14:31:31)

aya wrote:I do use a custom kernel and I did not have CONFIG_FHANDLE enabled. I wish it was posted as an announcement or something.
From the 210 release announcement:
systemd 210 announcement wrote:
Heya,
And here's the next release 210:
http://www.freedesktop.org/software/sys … 210.tar.xz
<snip>
Oh, and one reminder that kinda got lost when we announced 209: you have
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<snip>

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Edit
I am quite sure now this is a bug. The ARP proxying does not work for VMs if the packet-recipient is not directly attached
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/Edit
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How do I solve this problem?

Hi,
In that article I read this :
" This is supported on wired physical NICs (by putting the NIC in promiscuous mode),
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http://en.wikipedia.org/wiki/Promiscuous_mode
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Network bridge problems linking wwan0 and eth0 [SOLVED]

Hi There,
I have just got working a 3G modem which appears as device wwan0. I am trying to link this interface to my wired ethernet eth0.
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Hi,
Ok I have this working now, here are the steps I used.
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Thanks,
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Last edited by bmentink (2012-05-14 07:56:04)

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