Hi Bob, my fritz.box is a DSL router from AVM, which unfortunately does not give me access to syslog.
What I noticed is that 192.168.178.87 shows up without MAC address in the list of network devices of the fritz.box I think I will try first to get support from AVM on that topic. If that is not successful, I will look in more detail into the tcpdumps (although since I have to take that on the client side, that might be difficult during the startup phase). Thanks, Rainer On Friday 20 June 2014 13:11:45 Bob Proulx wrote: > Rainer Dorsch wrote: > > I have a system which comes up with one IP address 192.168.178.87 via > > dhclient, then after one day it gets eventually a different address > > > 192.168.178.88 from my fritz.box, which runs the dhcp server: > On your fritz.box what does the dhcpd log to the syslog? > > grep dhcpd /var/log/syslog > > And if you need to go back futher than a day: > > zgrep dhcpd /var/log/syslog* | less > > Also very useful for debugging is the dhcpdump utility. > > $ apt-cache show dhcpdump > > Description-en: Parse DHCP packets from tcpdump > This package provides a tool for visualization of DHCP packets as > recorded and output by tcpdump to analyze DHCP server responses. > > Bob -- Rainer Dorsch http://bokomoko.de/ -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/1515740.EgWcvBGFbZ@blackbox