All Questions
13
questions
0
votes
1
answer
2k
views
Is it normal to see "excessive" ARP requests from cable modem?
I'm troubleshooting my home network because we are having frequent outages and slow connections. Very often the ASUS Wifi router shows that it has no WAN IP address. To view what might be going on I ...
- 139
0
votes
0
answers
127
views
Windows PC sends ARP requests to outside subnet
I have a strange behaviour. I am seeing arp requests to another subnet. We have a central DHCP at ....0.2.21. The Client has an adress assigned from it ....1.1.20, with a 24 bit netmask. The Client ...
0
votes
1
answer
948
views
Severe ARP flooding from PC requesting link-local address
TLDR; PC is sending ARP Who is requests for a link local address 169.254.xxx.xxx continuously every second. Only on this device.
My PC begins to send constant ARP requests to the router for "Who ...
- 19
6
votes
2
answers
7k
views
How to Wake on WAN without broadcast address?
--- Recap of the possible solutions at the bottom ---
First of all I apologize if I write something that makes no sense. My knowledge of networks didn't go beyond what an IP address is until 3 days ...
- 163
1
vote
0
answers
2k
views
Connection issues when router in bridge mode is between modem-router and user device
I decided to extend my home network's wireless coverage by utilizing a spare router. Both routers are modem-routers and have been provided by different internet providers the previous years. So, their ...
- 11
0
votes
1
answer
3k
views
Need of ARP request before DHCP Offer [duplicate]
When I connect my system with Router, the IP address is assigned by DHCP Server in that router. When the DHCP Request goes to the DHCP server from the system, it offers the IP address as broadcast. ...
0
votes
0
answers
474
views
Correlation between DHCP and ARP
Can someone explain why there are so many ARP packets broadcasted from my client? And why is looking for my DHCP server?
- 1
1
vote
1
answer
213
views
No response to embedded system's ARP request after successful DHCP
I've been working to get UDP unicast packets implemented on an embedded system, using a Wiznet W5100S internet offload chip.
Their libraries enable the negotiation of DHCP, and I have successfully ...
- 111
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
219
views
Find out which access point devices are connected to
I work in a school and we have a multitude of access points dotted around the site. We have an open WiFi connection throughout that is locked down using a mac address filter.
We are currently having ...
- 1
0
votes
1
answer
2k
views
Almosy locked out of PfSense after setting static ARP table
So I almost locked out myself from pfsense after setting static ARP table in the dhcp severs's conf.
Now, I can't access pfsense from the network (nor ssh, nor webgui) because every request times out....
- 353
69
votes
2
answers
123k
views
What is the difference between ARP binding and DHCP address reservation?
In my TL-WR1043ND I have these functionalities and both of them pair an IP address to a MAC address. What is the difference?
I read that ARP is for security reasons, others say it is for Wake-on-LAN. ...
- 5,264
1
vote
0
answers
582
views
dhcp no lease because of not-DAD mode
My virtual machine does not receive an IP lease anymore.
Manually requesting a new ip lease by 'ifdown/ifup eth0' or 'dhclient eth0' or 'service network restart' don't work either.
The error is ...
- 11