Your message dated Wed, 05 Aug 2026 17:31:09 +0000
with message-id <[email protected]>
and subject line Bug#1143544: Removed package(s) from unstable
has caused the Debian Bug report #478532,
regarding dhcp3-server: dhcpd should ignore wrong udp checksums on loopback
device
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
478532: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=478532
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: dhcp3-server
Version: 3.0.4-13
Severity: minor
Hello,
since linux 2.6.24 no longer calculate the udp checksum for packages on
the loopback device, dhcpd should ignore wrong checksums in packages
coming from this device.
We use dhcping 1.2-3 running on the same host as dhcpd to check if
dhcpd is still answering. This works great with linux 2.6.8 but fails
with linux 2.6.24.
According to http://kerneltrap.org/mailarchive/linux-netdev/2007/9/23/272755
the kernel no longer generates udp checksums for packets on localhost.
Instead it sets a flag that signals that the udp checksum should be
ignored.
Can you make dhcpd honoring this flag, please?
Here some details from my setup. These hosts are the only linux hosts
in their subnets, so I cannot run dhcping on another host.
--------------------------------------------
# hostA working
--------------------------------------------
Related Packages:
dhcp-client 2.0pl5-19.1sarge3
dhcp3-common 3.0.1-2
dhcp3-server 3.0.1-2
dhcping 1.2-2
kernel-image-2.6.8-4-686 2.6.8-16sarge7
/etc/dhcp3/dhcpd.conf
ddns-update-style none;
log-facility local7;
default-lease-time 3600;
max-lease-time 86400;
not authoritative;
subnet 192.XXX.XXX.0 netmask 255.255.255.0 {
...
}
subnet 127.0.0.0 netmask 255.0.0.0 {
host hostA {hardware ethernet 00:0E:0C:71:XX:XX; fixed-address
192.XXX.XXX.1;}
}
# /usr/sbin/dhcping -c 192.XXX.XXX.1 -s 192.XXX.XXX.1 -h 00:0E:0C:71:XX:XX
Got answer from: 192.XXX.XXX.1
# tethereal -V -i lo udp
Capturing on lo
Frame 1 (292 bytes on wire, 292 bytes captured)
...
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Source port: bootpc (68)
Destination port: bootps (67)
Length: 258
Checksum: 0xc4c8 (correct)
#-------------------------------------------
# hostB not working
#-------------------------------------------
Related Packages:
dhcp3-common 3.0.4-13
dhcp3-server 3.0.4-13
dhcping 1.2-3
linux-image-2.6.24-1-686 2.6.24-5
/etc/dhcp3/dhcpd.conf
ddns-update-style none;
log-facility local7;
default-lease-time 3600;
max-lease-time 86400;
not authoritative;
subnet 192.YYY.YYY.0 netmask 255.255.255.0 {
...
}
subnet 127.0.0.0 netmask 255.0.0.0 {
host hostB {hardware ethernet 00:1F:29:C3:YY:YY; fixed-address
192.YYY.YYY.1;}
}
# /usr/sbin/dhcping -c 192.YYY.YYY.1 -s 192.YYY.YYY.1 -h 00:1F:29:C3:YY:YY
no answer
# tshark -V -i lo udp
Capturing on lo
Frame 1 (292 bytes on wire, 292 bytes captured)
...
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Source port: bootpc (68)
Destination port: bootps (67)
Length: 258
Checksum: 0xfc66 [incorrect, should be 0xb39c] !!!!
--------------------------------------------------
Thanks,
Martin
--- End Message ---
--- Begin Message ---
Version: 4.4.3-P1-8+rm
Dear submitter,
as the package isc-dhcp has just been removed from the Debian archive
unstable we hereby close the associated bug reports. We are sorry
that we couldn't deal with your issue properly.
For details on the removal, please see https://bugs.debian.org/1143544
The version of this package that was in Debian prior to this removal
can still be found using https://snapshot.debian.org/.
Please note that the changes have been done on the master archive and
will not propagate to any mirrors until the next dinstall run at the
earliest.
This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
[email protected].
Debian distribution maintenance software
pp.
Thorsten Alteholz (the ftpmaster behind the curtain)
--- End Message ---
