All Questions
33
questions
1
vote
0
answers
51
views
Why am I seeing ARP requests for addresses outside of subnet
In my home network I have a router running Linux, with several VLANs coming into the same physical interface.
This is what things look like on the router:
➜ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> ...
- 233
0
votes
1
answer
443
views
ARP cache: what does a `mask` value of `*` represent?
/proc/net/arp contains something like the following on my Linux box:
IP address HW type Flags HW address Mask Device
10.1.0.70 0x1 0x2 a4:4d:aa:6b:...
- 357
0
votes
1
answer
811
views
Why do I get "Destination Host Unreachable" on the same subnet, pinging a secondary IP address?
I have two AWS EC2 instances (RedHat 8), sa216p and sa216t, connected to the same subnet 172.31.80.0/20. Primary IP addresses are assigned to them by the EC2 DHCP, 172.31.84.105 and 172.31.92.210 ...
- 103
0
votes
0
answers
983
views
How can i find device type and name in linux terminal without install nmap and other similar tools from it ip address?
I'm looking for find a way to get device name and type like ESET Connected Home Monitor .
Eset :
Connected Home Monitor can help identify vulnerabilities in your home network such as open ports or a ...
- 33
6
votes
1
answer
9k
views
Manually sending ARP packets using bash
How could I send ARP packet to specified IP on a LAN using bash or some Linux utility?
- 63
0
votes
1
answer
1k
views
is there table like Ipv4 ARP for IPv6 in linux? where can i (path) find it?
where can i find NDP table in linux?
I'm trying to list the neigbours for the ipv6 address for my appliaction.
ip neigh is the command which we use to show the neigh ip address (both ipv4 and ipv6)...
1
vote
0
answers
162
views
ONT doesn't answer ARP request
I've been working with a custom linux image, based on yocto, running on an industrial tablet. During my tests, I've faced some problems to connect to a wifi network after rebooting the device.
Before ...
- 11
0
votes
1
answer
2k
views
How to setup proxy ARP in linux network namespace?
I'm running a veth pair - one end in the root namespace(let's call it inner), the other(let's call it outer) inside a different namespace.
From the namespace I'd like to set up proxy ARP on outer ...
- 185
1
vote
1
answer
532
views
Workaround for two devices with the same IP address on an airgapped network which is using an unmanaged switch where DHCP isn’t an option
So I have two IP cameras and a PC running Fedora 30 on a local network connected together using an unmanaged switch.
The two IP cameras have the same IP address by default and for reasons I won’t go ...
0
votes
1
answer
565
views
scapy Uses Wrong Sender MAC and IP Address for sr1()
My ARP request packet is sent from a thread running from a PyQt5 GUI app.
When I
Connect WiFi
Launch the app
Send the packet packet = ARP(op='who-has', pdst='192.168.1.1')
packet.show() outputs:
###...
- 227
1
vote
1
answer
2k
views
Can't clear _gateway entry from ARP cache on linux
I have been able to clear all of the entries from my arp cache except one. I has the ip address _gateway and the MAC address is that of my router.
I have tried "sudo arp -d _gateway", "sudo arp -a -d ...
1
vote
0
answers
123
views
Iputils arping works good with ethernet devices but not with wifi devices
I am developing an application for an embedded device to check whether a particular network device present in the local network (192.168.1.1 - 192.168.1.254) is alive.
Initially I was using ping to ...
- 11
2
votes
1
answer
5k
views
One IP address has multiple MAC addresses, how is this possible?
While looking for duplicate addresses with the following command, "arp-scan --timeout 1000 192.168.110.0/24", I discovered that the host I'm running this command on has multiple MAC addresses for the ...
- 21
1
vote
0
answers
1k
views
How to make OpenWRT work properly in GNS3
No matter what I try in GNS3 to get OpenWRT to run properly, I cannot get it to properly work with other GNS components. I can connect two devices through a switch and ping back and forth, but not to ...
- 111
0
votes
0
answers
166
views
Wireless networked device not receiving packets
I'm using create_ap (based on hostapd) to use an old desktop Linux computer as a wireless router. This works fine for my Android smartphone, but not for my two Linux laptops. The connection will stop ...
- 208