network – the Ethernet card only works after a soft reboot (82579V on Xubuntu 18.04)

I'm using Xubuntu 18.04 and I have a problem with my network card.

When I start my computer, I can not use my network card: it does not appear in ifconfig. But when I restart slowly, everything is fine.

In Xubuntu 16.04, I had no problem.

How can I solve this strange behavior?

here is my lspci exit:

00: 19.0 Ethernet Controller: Intel Corporation 82579V Gigabit Network Connection (Rev 04)

my lshw:

        * unclaimed network
description: Ethernet controller
Product: Gigabit Network Connection 82579V
* -Network: 0
description: Ethernet interface
capabilities: Physical Ethernet
* -network: 1 OFF
description: Ethernet interface
capabilities: Physical Ethernet

An idea?
Thank you!

windows 7 – my ethernet can ping via win 7 and win 10, but in win 7 it has a connection error

I've had a ping through two Win7 computers and win 10.
I had the source code that wins 10 source code can be connected with win 7 computers.
But, strange thing, I use the same source code and I just could not connect

form win 7 to win 10 computers.
Could an obstacle be behind the winner 7 instead of 10?
Can I open an IP address in my Win 10 firewall? Where can I open an IP address in my win 7 & firewall?

Please help.

extension of the 35 m Ethernet connection with digital TV, even cable possible?

I have a second room in which I would like to be able to watch TV and have an ethernet cable.

At the moment, I'm using a homeplug device to multiplex Ethernet over an electrical network. Sometimes it does not work anymore, I have to reset the receiver.

Is it possible for me to enjoy gigabit Ethernet and digital TV (connected to a normal TV) with a single cable?

wireless – can connect to the server on the university network with ethernet but not with wifi

In my lab, we set up a Dell server with the idea of ​​connecting via wifi to this one. The server is located on the university and connects to the Internet with Ethernet, using a static IP address.

The server runs on a Linux server and I use Windows 10 on my laptop. I settled on the xrdp remote desktop and on ssh to connect to it. I can be connected and use the server when my laptop is connected with ethernet, but this is not possible with the wifi, which was the main point of the server. It's the same thing for xrdp and ssh, I can connect with ethernet but not with wifi.

I am really lost since it was the first time I set up a remote connection. I have no idea what the problem could be.

Thank you for your answers!

PS: The network is eduroam.

linux – Sharing a WiFi Internet Device PC to USB Ethernet (Raspberry Zero USB Connected)

I have connected my Pi Zero to my PC (Linux LMDE 3 Cindy) via a USB port successfully, so I wish to connect to the internet via my laptop which is connected to the internet through its WIFI network.

I found this instruction or question via raspberrypi.stackexchange but these work for Windows or MAC OS, but I can not find it for Linux !!!!

So, I need similar instructions to enable sharing my internet via USB enp0s20f0u1 device (PI Zero) under Linux. For example, in Windows, we must:

In the WiFi Properties window, click the "Sharing" tab: similar to
this photo:

I could help an IP ( for my raspberry by running this code in my raspberry based these instructions:

sudo nano / etc / network / interfaces
allow-hotplug wlan1
iface wlan1 manual inet
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

enable-hotplug usb0
iface usb0 static inet
network mask network

I have this (sudo ifconfig) in my Linux:

    enp0s20f0u2: flags = 4163  1500 mtu
inet network mask broadcast
inet6 fe80 :: cff5: f703: 7327: prefixlen dd9 64 scopeid 0x20
        ether 6th: 2f: 15: 92: bd: a8 txqueuelen 1000 (Ethernet)
RX packages 2936 bytes 244294 (238.5 KB)
RX Errors 0 Aborted 0 exceed 0 image 0
TX packets 2113 bytes 174942 (170.8 KB)
TX errors 0 missed 0 exceedances 0 carrier 0 collisions 0

wlp2s0: flags = 4163  1500 mtu
inet network mask broadcast
inet6 fe80 :: 373d: 1b7f: 5b9e: prefixlen 8ddc 64 scopeid 0x20
        ether c8: 3d: d4: 3c: 23: 63 txqueuelen 1000 (Ethernet)
RX packages 33305 bytes 31322783 (29.8 MB)
RX Errors 0 Aborted 0 exceed 0 image 0
TX Packets 26405 bytes 4264995 (4.0 MB)
TX errors 0 missed 0 exceedances 0 carrier 0 collisions 0

the enp0s20f0u2i2 is my raspberry scratch that uses IPV4 Local Link Method Only but I could change its IP to static IP like as described above.

And in my raspberry:

pi @ raspberrypi: ~ $ ifconfig -a
lo: flags = 73  mtu 65536
inet network mask
inet6 :: 1 prefixlen 128 scopeid 0x10
        loop txqueuelen 1000 (local loop)
RX Packets 72 bytes 6840 (6.6 KB)
RX Errors 0 Aborted 0 exceed 0 image 0
TX packets 72 bytes 6840 (6.6 KB)
TX errors 0 missed 0 exceedances 0 carrier 0 collisions 0

usb0: flags = 4163  1500 mtu
inet network mask broadcast
inet6 fe80 :: d7db: e53b: 407d: 8d65 prefixlen 64 scopeid 0x20
        ether ee: 70: 24: ba: 2d: 57 txqueuelen 1000 (Ethernet)
RX packets 182 bytes 28198 (27.5 KB)
RX Errors 0 Aborted 0 exceed 0 image 0
TX packets 172 bytes 15872 (15.5 KB)
TX errors 0 missed 0 exceedances 0 carrier 0 collisions 0

so when I do this site instruction
I run this code under Linux:

# Bring both interfaces in promiscuous mode
sudo link defined wlp2s0 promisc on

and this code in my raspberry:

sudo link put usb0 promisc on

when I run this code in my Linux operating system (laptop):

# Creating a new bridge interface
sudo brctl addbr br0

# Set the transfer delay to 0.
# Although not necessary, I learned that it was useful to speed up setup.
sudo brctl setfd br0 0

SO when performing the next step (sudo brctl addif br0 wlp2s0 enp0s20f0u2) I'm getting this error:

unable to add wlp2s0 to bridge br0: unsupported operation

so I do that:sudo iw dev wlp2s0 mis 4addr on here to solve this bug, but I lose my internet connection:

so @ notebook: ~ $ ping
Ping: unknown name or service

I also lose the connection with my Raspberry zero (USB Ethernet).

So what do I have to do to make a bridge to share my internet laptop with raspberry scratch?

Thank you so much.

switch – Best way to connect multiple Ethernet switches

I want to connect as many devices as possible to my internet connection (at home). I'm considering the netgear orbi that only offers 1 + 3 ports (on the router). Does it make sense to connect one of the 3-port routers to an 8-port master switch and, from that switch, connect it to switch2, switch3 and switch4? (see diagram above)

The house was built in 2001. I have several drops in all the main rooms but none in the right place. Run cat5 from the external casita (where the router is located is not feasible).

Alternatively, I can choose ONE device (per switch) that needs to be wired and connect everything else wirelessly. (see diagram below). The problem with this last solution is that the solar and garage modules would be respectively distant from the roof and the garage and I am not sure that these devices can communicate correctly.

Thank you very much for any advice you can share.

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wireless network – How to activate the rediffusion of hello packets from a device connected to a local Ethernet network while sharing wifi access on the wifi segment?

Here is my current configuration:

Apple MacBook Pro (MBP) with macOS 10.14.4 with Internet sharing enabled from wifi to ethernet, as well as synergy pro running in server mode as a network-compatible keyboard and mouse share / switch

Western Digital MyCloud Home (MCH) 4 TB connected to the MBP Ethernet port providing a Time Machine-compatible network volume and file-sharing protocol, for which the DNS mapping of the MyCloud-XXXXXX.local domain on the network. DHCP-assigned IP address of the MCH The device is configured via a zeroconfiguration protocol that broadcasts its available services via its local area network connection, which in turn is compatible with the zeroconf variant of the Apple operating system, called Bonjour, as well as Linux and Windows (provided that a client compatible with Bonjour is installed). windows) OS.

Hewlett Packard ProBook (HPB) 4440 dual boot Ubuntu 18.04 and Windows 10 Pro have been configured and verified to communicate with hello via Synergy Pro operating in client mode, which is based on hello / zeroconf and an Ethernet cable used as uplink to the Internet, the Ethernet port of the Linux operating system has been configured for sharing via the Wi-Fi access point.

The MBP then connects to the Wi-Fi hotspot of the HPB while the HBP is running Ubuntu.

Therefore, the Internet network diagram at mycloud home is represented by the following:

l & # 39; Internet <--via ethernet--> DGPS <--via WIFI--> MBP <--router mode enabled via Ethernet--> MCH

On the Ubuntu partition of the HPB, I allowed the Deja Dup backup tool to work with MCH via its zeroconf address as a storage location that looks like this:


where the six consecutive "X's" are substituted for the device identifier and "/ path / to / folder" is substituted for the folder in which I want to save the tar.gz files created in duplicity.

This works when the MCH is connected to an Ethernet port managed directly by a WAP (modem) / router / router access point or connected in bridged mode compared to the router / modem / WAP router. However, because the auto-discovery packets associated with the MCH zeroconf protocol are not visible to devices outside its "network", which in this configuration due to the way that macOS Internet sharing is implemented in the same mode. router (with DHCP / NAT enabled and therefore, a subnet and IP range) is limited to MBP and no other device.

The reason I connected the MCH directly to the MBP is that the Mac is my main workstation. As a result, it produces the most content to back up and the connection between MCH and MBP. I want a minimum latency and maximum priority / reliability. . Thus, the connection between HPB and MCH is mostly ancillary and not essential to my workflow, but it is still desirable.

I have already read that it is impossible to connect an ethernet connected device to a wifi network segment, as explained in the following link:

Share Internet as a bridge as a router using PFCTL (OS X)?

I would like to know if there is a way around the problem or to find a solution (even if it is not elegant), for example to ensure that the zeroconf MCH protocol works on all the network segments that I choose, at least those that are under my control. because I created / configured them to a point that far exceeds a standard use case.

P.S. Any help would be greatly appreciated, and thank you in advance.

web development – lost Ethernet connection then work on localhost

It is therefore possible to insert data or create files in case of loss of connection .. (Web Application (PHP)).

Example of domain name / IP

So, if the Ethernet connection is lost, I can still use a web application like inserting data into files (PHP form data in a file).

Ethernet disappears after 2 hours and workers can still insert data from the website (for example, it works offline localhost and if the Ethernet connection is reestablished, it is online and visible from the domain name or the IP address; it's offline, localhost IP or just "localhost").

This is possible?

Network – Can I share an Ethernet Internet connection via a Thunderbolt cable?

I do not want to use WiFi, but I have to share the Internet connection of my iMac (with incoming Ethernet) on my MacBook Pro, using a Thunderbolt cable.

I've connected both in Network / Sharing Settings, I can share files / screens, etc., but the MBP does not detect any internet connection.

I've enabled Internet sharing on the iMac, Ethernet> thunder, but no joy – any ideas? Thank you!

Networking – Ubuntu 18 Command to Enable and Disable a USB Ethernet Card

I have a USB Ethernet card that works well with Ubuntu 18.04. Now I have to find a way to turn it on and off with command.

I have tried the command sudo ip l s dev enx00249b450d4d down (enx00249b450d4d is the name of the interface), but nothing changes.

I've also installed net-tools and tried the command sudo ifconfig enx00249b450d4d downbut was not lucky either.

I've searched the internet, but the information on Ubuntu 18 is still rare. An idea?