Currently working on an OpenEmbedded/Yocto board, and I'm running into an issue with Wifi.
Inside of interfaces, if I set a static IP, and assign it my network, gateway, netmask, and dns, it works when connecting to a specific wireless access point with wlan0.
However, if I set wlan0 to inet dhcp, instead of inet static, then it can connect to the access point, ping other things on the network, but it cannot get out to the internet. I have tried many things to get it to work, but to no avail.
I have played with wpa_supplicant, and interfaces, as well as udhcpc in order to try and get this to work, but nothing is working.
Does anyone have any ideas?
Edit 1: Took a look at route -n with both dhcp and static. The only difference is that with dhcp, Metric is set to 10 on the dhcp attempt, and 0 on the static.
Related
I have Wireguard installed on a Raspberry Pi 4 via PiVPN. The pi is plugged directly into my network switch.
I went through the setup and assigned the pi a static IP (10.0.0.157), generated a config and tried to login from my laptop (laptop was on a personal hotspot for testing purposes).
Wireguard connected using the profile and said it was sending traffic, but I was not able to load anything or ping any of the devices on my internal network.
I also noticed that my laptop was being assigned an IP of 10.0.6.1, which doesn't make sense because my network is in the IP range of 10.0.0.0/24
Any idea why this is happening or how to fix it?
I was able to fix this by changing the AllowedIPs value in the config and ensuring that I was forwarding the proper port.
I am running raspin on an Raspberry Pi2 and I have configured it to have a staic IP on eth0 but it never changes it sticks to its DHCP lease. This is what I have in the interfaces-file under networking.
iface eth0 inet static
address 192.168.1.60
gateway 192.168.1.1
netmask 255.255.255.0
Have I done anything wrong? Am I blind? :)
Did you try restarting network?
/etc/init.d/networking restart
Not an answer to your question, but a workaround.
Add a static IP lease rule in your DHCP server, this is going to be your router in most cases.
Try restarting the RPi or network - the edited interfaces file doesn't take effect until you do that. Some routers also don't like you requesting a certain IP, so you can also set it to DHCP on the RPi and configure the router so that it always assigns a certain IP to the device.
BTW!! I am able to connect to the internet via GNS3 Router. My question is about the IP Address that's assigned to the router!
Here it goes:
So this is my set up in GNS3:
Router 1 ---> Cloud (using my local MS loopback interface)
I had been struggling to get my router to the internet for a while. I'd run ipconfig and found that my wireless connection had an IP of 10.x.x.x with a gateway of .1. So obviously, I was trying to manually assign my MS loopback a random address of like 10.x.x.25 (/24, so still within the same subnet). But it never worked!!
Finally gave up, and then a new idea hit me. I set my MS loopback as "receive IP via DHCP", and also my GNS3 router interface that's facing the loopback cloud as "receive IP via DHCP".
They both received an IP Address of 192.168.x.x, and it connected to the internet as well. Duh.. no wonder my manual 10.x.x.x didn't work.
I did an ipconfig/all.... I just could not see a 192.168.x.x subnet in there at all.. no trace of it, just 10.x.x.x was present.
Where DID this 192.168.x.x IP come from? Difference between 10.x and the 192.x address?
Any help would be appreciated!
Nevermind, I think I figured it out. 10.x would be an IP address if it was handed out by my home router.
Here, since I allowed my Loopback to link up with my real router, my PC is behaving as a DHCP server instead, on behalf of my real home router. So 192.168.x is a pool belonging to my PC which handed out an IP to my virtual GNS3 router.
A traceroute to a google dns server revealed the works behind the scenes. It reach the 192.168.x.1 and THEN went to the 10.x.x.1. So my PC is like a proxy right?
I am trying to connect over Linux. My device is connected to two LANs (say eth0 and eth1) with different networks.
Both networks are connected to internet. I want my client program to be able to use eth1 even though my eth0 is the default interface.
There is an option setsockopt (SO_BINDTODEVICE) to bind to a specific interface but requires root priviledges which is not possible.
Binding to IP address of eth1 is not helping either. Please suggest is there any other way through socket APIs to link the connection with the interface. i.e. my client program will always usse eth1 source IP and interface to connect to the internet whereas all other programs will continue to use eth0 as ususal.
I investigated and appears changes in routing table can help in this but trying to avoid being risky to make system unstable as that is applied to every other programs too.
Thanks in advance.
Kris
I want to know how does the loopback alias work,lets say i have the following nodes:
n[1-10] on a load balancer,
all under the following VIPs :
xx.xx.xx.xx
yy.yy.yy.yy
on the nodes we have the following:
lo:0 Link encap:Local Loopback
inet addr:xx.xx.xx.xx Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:16436 Metric:1
lo:1 Link encap:Local Loopback
inet addr:yy.yy.yy.yy Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:16436 Metric:1
Can some one explain me what is the concept of the loopback,or giving me a link to read about this concept
sorry , i don't have a deep background about, this ,and i don't want just to know HOW to do it (and this is the most thing i found while i'am searching for),but i want to know why i'am doing this loopback alias
Can some one explain to me what is the life cycle of a client request ,including the load balancer rule,and how the loopback server in this game :) ?
Thanks all
In order for services on the nodes to be able to listen for incoming connections for the VIPS, you need to configure the VIPs on an interface, physical or loopback.
The thing is, you don't want the nodes to answer to ARP requests regarding VIPs, because you only want the load balancer to do that, in order for all connections to go to the load balancer.
In order to do that, you need to do ARP filtering on the nodes one way or another, allowing them to respond to ARP requests for their real IPs, but not for VIPs. On Linux, one really simple way to do that is to configure the system to respond only to ARP requests coming into the interface owning the IP address, using arp_ignore and arp_announce sysctls. Loopback interfaces being local by design, there will be no ARP requests coming into the loopback.
If you want to learn more about that, you can read the "ARP Problem" part of the LVS Howto :
http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.arp_problem.html