All Questions
12 questions
0
votes
1
answer
79
views
Ethernet connection "unavailable"
I've searched all related questions to this topic, to no avail. I've got an ethernet card on my laptop, but the connection will not work.
I checked in the BIOS, and the card is enabled. I can't ...
- 121
2
votes
0
answers
326
views
Predictable network interface names with BusyBox
I want to map each hardware NIC to a specific linux network interface (ethX) persistently, as currently when an ethernet cable is reconnected, it picks an interface seemingly at random. This is ...
- 21
-1
votes
1
answer
2k
views
How to configure 2 network interfaces which make use of the same physical ethernet port?
I currently have a linux system with only one physical ethernet port. This physical port has the eth0 network interface attached to it. I want to create another ethernet interface which also makes use ...
3
votes
1
answer
3k
views
Route traffic between interfaces on same device ( wlan0 to usb0 )
I have a usb0 interface with 10.0.0.1 ip with a router on 10.0.0.2 and unaccessible to internet. I also have a wifi adapter on wlan0 with 192.168.0.3 connected to my router at 192.168.0.1 (this is ...
- 31
0
votes
1
answer
698
views
Traffic into lo vs eth, why might I be seeing only half the traffic on lo compared to eth?
I am forwarding traffic to ports on eth0 and lo.
For the same traffic at the same ports and different ports, when I do a tcpdump and count the packets, for time t, I only see about half the number of ...
- 113
1
vote
0
answers
4k
views
UDP send buffer error in netstat
I we are running voice application which stream UDP (RTP) packets for voice, I am investigation some strange issue where my ifconfig ens4 | grep error counter going up specifically overrun
If you see ...
- 1,672
1
vote
0
answers
1k
views
Why my Raspberry pi receive no packets using Ethernet?
I use a Raspberry pi 3b. The OS is Raspbian jessie.
I don't understand why I can't connect with any RJ45 cable, and only wireless connection works. The cable rj45 is straight.
The step I did to ...
- 11
7
votes
0
answers
4k
views
Using ip, what does M-DOWN mean?
When using the terminal tool ip, there is a number of flags for every interface.
Example: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
What is the meaning of M-DOWN? ...
- 181
3
votes
1
answer
4k
views
network interfaces rename not working as expected. Where to look?
System is Ubuntu 16.10. It has been updated quite some times, so it might have some remaining stuff from earlier versions in there (at least back till 14.04, probably much longer).
The issue it the ...
- 31
0
votes
1
answer
1k
views
how to create virtual router/switch on Ubuntu server
I have a dedicated server ubuntu 16.04 OS / 8 GB Ram, with over 5000 IPv6 from /48 subnet assigned to using below command
ip -6 addr add IPv6/48 dev eth0
creating massive parllel connections cycling ...
0
votes
1
answer
50
views
I wish to move SBC flash image to new board and maintain network interface indexing
I wrote a small php application on a SBC. I created a disk image from the CF card. When I write the image to a new CF and install on a new SBC the interface index numbers (I hope I am stating that ...
- 146
3
votes
3
answers
6k
views
Why is delay after ifconfig down needed before up if changing MAC address?
Hi I made bash script to put down my interface, change MAC address and get it up again.
#!/bin/bash
INTERFACE_STATUS=$( cat /sys/class/net/eth0/operstate )
echo "$INTERFACE_STATUS"
if [ "$...
- 579