Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
DHCPD flooding logs [SOLVED ... I think]
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index Networking & Security
View previous topic :: View next topic  
Author Message
albright
Advocate
Advocate


Joined: 16 Nov 2003
Posts: 2539
Location: Near Toronto

PostPosted: Tue Nov 22, 2016 12:29 pm    Post subject: DHCPD flooding logs [SOLVED ... I think] Reply with quote

I know there are some threads about this but I can't find any solutions, so ...

I have a computer which serves addresses on local network and that
is working fine

but the system log is filling up with these:

Quote:
Nov 22 07:24:02 gandalf dhcpd[23945]: DHCPDISCOVER from ec:22:80:a3:4a:b4 (gandalf) via eth1
Nov 22 07:24:03 gandalf dhcpd[23945]: DHCPOFFER on 192.168.0.35 to ec:22:80:a3:4a:b4 (gandalf) via eth1
Nov 22 07:25:06 gandalf dhcpd[23945]: DHCPDISCOVER from ec:22:80:a3:4a:b4 (gandalf) via eth1
Nov 22 07:25:07 gandalf dhcpd[23945]: DHCPOFFER on 192.168.0.35 to ec:22:80:a3:4a:b4 (gandalf) via eth1
Nov 22 07:26:09 gandalf dhcpd[23945]: DHCPDISCOVER from ec:22:80:a3:4a:b4 (gandalf) via eth1
Nov 22 07:26:10 gandalf dhcpd[23945]: DHCPOFFER on 192.168.0.35 to ec:22:80:a3:4a:b4 (gandalf) via eth1
Nov 22 07:27:13 gandalf dhcpd[23945]: DHCPDISCOVER from ec:22:80:a3:4a:b4 (gandalf) via eth1
Nov 22 07:27:14 gandalf dhcpd[23945]: DHCPOFFER on 192.168.0.35 to ec:22:80:a3:4a:b4 (gandalf) via eth1


Note that "gandalf" is the computer running dhcpd so it kind of looks (to me) as if gandalf is discovering
itself and offering an address to itself which is, of course, never taken up (since it naturally has a static
address)

But that is just my speculation. Any one help? TIA
_________________
.... there is nothing - absolutely nothing - half so much worth
doing as simply messing about with Linux ...
(apologies to Kenneth Graeme)


Last edited by albright on Sun Nov 27, 2016 6:17 pm; edited 1 time in total
Back to top
View user's profile Send private message
Tony0945
Advocate
Advocate


Joined: 25 Jul 2006
Posts: 2883
Location: Illinois, USA

PostPosted: Sun Nov 27, 2016 2:28 pm    Post subject: Reply with quote

Which do you want to do? Stop the logging? Or stop gandalf from going to dhcpd on itself?

EDIT: I would assume the later. Are you running OpenRC or systemd? Are you running Network-Manager? from the network-manager wiki page:
Quote:
Note
NetworkManager and other network management services typically don't work together. That includes a standalone instance of dhcpcd. Make sure only one network management service is running.


Tell us more about your network setup.
Back to top
View user's profile Send private message
Ant P.
Watchman
Watchman


Joined: 18 Apr 2009
Posts: 5592

PostPosted: Sun Nov 27, 2016 5:01 pm    Post subject: Reply with quote

I'm surprised it's doing that at all; dhcpd is one of those crufty old unix daemons that doesn't know how to handle hotplug, so it seems odd it'd be answering requests on its own interfaces that lack an IP.
Back to top
View user's profile Send private message
albright
Advocate
Advocate


Joined: 16 Nov 2003
Posts: 2539
Location: Near Toronto

PostPosted: Sun Nov 27, 2016 6:17 pm    Post subject: Reply with quote

thanks for the help

it looks like the problem *might* have been that I had
overlapping static and dynamic dhcpd address assignments

I fixed that and the logs are back to normal (ie. I only
see reports of actual new leases or releases ...)

I'll mark it solved but keep watching
_________________
.... there is nothing - absolutely nothing - half so much worth
doing as simply messing about with Linux ...
(apologies to Kenneth Graeme)
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index Networking & Security All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum