dragoran wrote:
David Timms wrote:
dragoran wrote:
dragoran wrote:
John Reiser wrote:
when I try to use dhcp for my network device (eth0 - forcedeth)
it does
not get an IP with the result: failed
2) how can I debug it to find out what is causing it?
Boot single-user, invoke the dhcp program from a console in
"non-daemon"
mode, and watch.
how do I do this (found nothing in the man page)
For dhcpd, consider flags -d -tf and perhaps -play.
Also, consider running under strace.
I am talking about dhclient not dhcpd
For lowest-level packet trouble,
use a program such as tcpdump or ethereal to check what goes over
the wire.
used ethreal an have not found anything that looks like an error...
this is what I get in /var/log/messages:
Jul 19 09:08:39 chello062178124144 dhclient: DHCPDISCOVER on eth0 to
255.255.255.255 port 67 interval 6
Jul 19 09:08:45 chello062178124144 dhclient: DHCPDISCOVER on eth0 to
255.255.255.255 port 67 interval 9
Jul 19 09:08:54 chello062178124144 dhclient: DHCPDISCOVER on eth0 to
255.255.255.255 port 67 interval 10
Jul 19 09:09:04 chello062178124144 dhclient: DHCPDISCOVER on eth0 to
255.255.255.255 port 67 interval 12
Jul 19 09:09:16 chello062178124144 dhclient: DHCPDISCOVER on eth0 to
255.255.255.255 port 67 interval 19
Jul 19 09:09:35 chello062178124144 dhclient: DHCPDISCOVER on eth0 to
255.255.255.255 port 67 interval 5
Jul 19 09:09:40 chello062178124144 dhclient: No DHCPOFFERS received.
wtf?
who is broken here? should I fill a bug?
Can you run ethereal on the dhcp server {or a third machine} to
ensure the packets get to the server ? firewall stopping udp port 67
or 68 at either end ? Slow negotiating switch or mismatched port
speeds ?
Is the DHCP server set to be authoritative; ? Without this I believe
win {for eg} tries hard to use any previous dhcp it last received,
not sure about fc-whatever.
At the server should see:
DHCP Discover -> server
client <- DHCP Offer
DHCP Request -> server
client <= DHCP ACK
DaveT.
the problem is that I havn't any access to the server (its the ISPs
dhcp server)
any idea how to get this working? it works well on windows (same nic,
same network)
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