Re: DHCP client problem

[David Fokkema <fokkema@nat.vu.nl>]

> I run dhcpdump and get this output at the time when my IP changes
> (192.168.1.192 is the 'old' address, 192.168.1.2 is the dhcpd):
>
>   TIME: 14:06:30.215030
>     IP: 192.168.1.192.68 (0:10:a4:f5:63:d6) > 192.168.1.2.67
> (0:30:48:10:49:75)
>     OP: 1 (BOOTPREQUEST)
>  HTYPE: 1 (Ethernet)
>   HLEN: 6
>   HOPS: 0
>    XID: affc4578
>   SECS: 216
>  FLAGS: 0
> CIADDR: 192.168.1.192
> YIADDR: 0.0.0.0
> SIADDR: 0.0.0.0
> GIADDR: 0.0.0.0
> CHADDR: 00:10:a4:f5:63:d6:00:00:00:00:00:00:00:00:00:00
>  SNAME: .
>  FNAME: .
> OPTION:  53 (  1) DHCP message type         3 (DHCPREQUEST)
> OPTION:  51 (  4) IP address leasetime      600 (10m)
> OPTION:  55 (  7) Parameter Request List      1 (Subnet mask)
>                                              28 (Broadcast address)
>                                               2 (Time offset)
>                                               3 (Routers)
>                                              15 (Domainname)
>                                               6 (DNS server)
>                                              12 (Host name)
>
> After this my network link goes down and comes up again with the new
> address.
>
> Any ideas what would cause the dhcpd to give me a new address instead of
> assigning the same again?

Are you sure there is not even a DHCPNAK received? And I'm puzzled, since
tcpdump|dhcpdump should show you the OFFER, REQUEST and ACK for the new
address...

David