Questions tagged [virtual-interface]
The virtual-interface tag has no usage guidance.
19
questions
2
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Understanding packet flow through iptables rules for docker container bridge network?
Background
I want to understand the relationships between docker container networks and iptables, and generally understand how packets flow from the eth0 interface (in a container), through the ...
- 33
0
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3
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How to create Ethernet interface at a specific IP address that I can ping and force to sometimes reply and sometimes not?
I'd like to do some experiments to test the ping and fping commands (see: Equivalent of `ping -o` on Linux), but I need a local virtual Ethernet interface to test this.
I'd like to have a scenario ...
- 2,652
4
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1
answer
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docker interface tears down wifi internet
I see this problem on my laptop: when I docker run a Docker container, then after a few seconds my WiFi internet stops working. I don't have an Ethernet connection to test that side of things.
I don't ...
- 567
26
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8
answers
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What's the best way to actually "type" special UTF-8 chars?
Everything on my system (that needs it) supports UTF-8 just fine.
That's all nice when you want output...
But what if you want easy input ?
At the moment the only non-ASCII chars I can easily type are ...
- 2,069
1
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2
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2k
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Cannot ping second IP address on another machine's interface
I have an OpenVPN client connected to an OpenVPN server.
The server has the following routes:
default via 10.109.185.65 dev eth0 proto dhcp src 10.109.185.84 metric 100
10.8.0.0/24 dev tun0 proto ...
- 278
6
votes
2
answers
1k
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Unable to connect vm to IPv6 internet via virtual tap interface
I'm having trouble connecting a vm to the IPv6 internet through a virtual tap device on the host. I.e., I cannot ping ipv6.google.com or the public IPv6 host global primary interface address. Ex:
-...
- 133
0
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1
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305
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How to send ethernet frames from one veth to another?
I have two veth pairs (veth1, veth1_0) and (veth2, veth2_0). veth1_0 and veth2_0 are in the default namespace ns0, veth1 is in namespace ns1 and veth2 in namespace ns2. I want to communicate between ...
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2
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2
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Veth interface configuration persistent
How to configure the veth interface on CentOS 7 in such a way to make it state persistent after system reboot?
For example:
veth configuration:
# create veth pair and assing IP address.
ip link add ...
- 23
0
votes
1
answer
220
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Run script when virtual interface is up
I have /sbin/ifup-local set to execute and it works
but my virutal interface eth0.2 (vlan2) is the one that gets the IP address I need to run the script .
How can i run a bash script when eth0.2 is ...
- 199
2
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1
answer
3k
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Is it possible to send packets between network namespaces using only TUN/TAP interfaces?
I am trying to understand the difference between different types of (virtual) interfaces (e.g. TUN/TAP, veth etc.) and was studying some of these types within the context of containers.
Is it ...
- 327
0
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2
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388
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Why I cannot initialize dummy interface at bashrc?
I did try to initialize a dummy interface in shell manually without no problem. In order to bring up this interface at every boot up process, then i tried to add it to /etc/bashrc or /etc/profile as ...
- 175
2
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1
answer
2k
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Detecting that a network interface is "physical" or "virtual" using only RTNETLINK on Linux?
I would like to detect whether a network interface is "physical" or "virtual", where "physical" means that the interface has hardware attached, even if that "hardware" is virtualized by a hypervisor. "...
- 1,337
3
votes
7
answers
3k
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How to show only interfaces starting with a certain pattern
Open-Vswitch creates virtual interfaces, they all have this pattern: s[digit]-eth[digit] For example: s1-eth1, s1-eth2, s12-eth3, s2-eth3 ...
I want to show information of -for example- all ...
- 133
1
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1
answer
1k
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How to use different virtual network interfaces for different processes?
The solution to non-virtual network interfaces is here: https://unix.stackexchange.com/a/210992
But the problem is I have multiple IPs on one network interface and I'd like to be able to assign each ...
- 143
7
votes
1
answer
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How to properly configure a tun/tap Interface in linux?
Basically I am trying to create a custom TCP Stack. As you might know I cant use eth0 because linux kernel TCP stack uses that, Due to that I need to create a tun/tap interface and use it for my ...
- 71