[Dnsmasq-discuss] RaspberryPi PCAP file
Community Member
stappers at stappers.nl
Sat Dec 4 11:42:52 UTC 2021
On Fri, Dec 3, 2021 at 12:50 PM Geert Stappers wrote:
> On Thu, Dec 02, 2021 at 10:02:27PM +0000, Simon Kelley wrote:
> > I've not played with Pi, but assuming it's some variety of the PXE
> > protocol, that usually tries pathnames constructed from the MAC
> > address, then the IP address with decreasing specificity (Ie
> > 192.168.1.100, then 192.168.1, then 192.168, then 192) and finally it
> > tries a fixed pathname. If you don't want to have machine-specific boot
> > files, just don't provide those files and the boot process will drop
> > though top the generic ones.
>
>
> What would help is providing a fairly complete network packet capture
> of a Raspi attempting to netboot. 'fairly' because it is OK if the
> capture stops at the point of requesting /srv/tftp/7a6d27f6/autoboot.txt
> 'complete' for aiming to providing the "whole picture".
>
> * Known the name of the network interface connected to the client.
> Let's assume it is 'eth3'
...
> * Invoke `sudo /sbin/tcpdump -ni eth3 -w raspiModelFoo.pcap ether host dc:a6:32:05:7f:03`
> where 'dc:a6:32:05:7f:03' is the MAC of the Raspi.
> * Netbook the Raspi
> * tcpdump wil not show anything
> * Give the Raspi to (attempt to) netboot
> * Stop tcpdump with Control-C so we can go the next step
> * There is a libpcap file 'raspiModelFoo.pcap' (ModelFoo replaced with
> your actual model of RaspberryPI
> * Save the .pcap somewhere on the Internet where it can be fetched.
> * Share the URL with the mailinglist. Karma bonus points for an URL
> that can be used with `wget`.
>
wget http://now.zapto.org/temp/RPI3bp13.pcap
97mb
client Raspberry Pi 3 Model B Plus Rev 1.3
server log from one boot:
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPDISCOVER(eth-local) b8:27:eb:6d:27:f6
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPOFFER(eth-local) 10.21.0.162 b8:27:eb:6d:27:f6
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-tftp[1584]: file /srv/tftp/bootsig.bin not found
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/bootcode.bin to 10.21.0.162
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPDISCOVER(eth-local) b8:27:eb:6d:27:f6
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPOFFER(eth-local) 10.21.0.162 b8:27:eb:6d:27:f6
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/start.elf to 10.21.0.162
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-tftp[1584]: file /srv/tftp/7a6d27f6/autoboot.txt not found
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/start.elf to 10.21.0.162
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/config.txt to 10.21.0.162
Dec 3 16:51:43 rpi-cb-1f-f7 dnsmasq-tftp[1584]: file /srv/tftp/7a6d27f6/recovery.elf not found
Dec 3 16:51:47 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/start.elf to 10.21.0.162
Dec 3 16:51:47 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/fixup.dat to 10.21.0.162
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: file /srv/tftp/7a6d27f6/recovery.elf not found
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/config.txt to 10.21.0.162
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/config.txt to 10.21.0.162
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: file /srv/tftp/7a6d27f6/dt-blob.bin not found
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: file /srv/tftp/7a6d27f6/recovery.elf not found
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/config.txt to 10.21.0.162
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/config.txt to 10.21.0.162
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: file /srv/tftp/7a6d27f6/bootcfg.txt not found
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:51:48 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/initrd.img-5.10.63-v8+ to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/initrd.img-5.10.63-v8+ to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/bcm2710-rpi-3-b-plus.dtb to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/bcm2710-rpi-3-b-plus.dtb to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/overlays/overlay_map.dtb to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/overlays/overlay_map.dtb to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/config.txt to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/config.txt to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/overlays/vc4-kms-v3d.dtbo to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/overlays/vc4-kms-v3d.dtbo to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/cmdline.txt to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/cmdline.txt to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: file /srv/tftp/7a6d27f6/recovery8.img not found
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/kernel8.img to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: file /srv/tftp/7a6d27f6/armstub8.bin not found
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/kernel8.img to 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: error 0 Early terminate received from 10.21.0.162
Dec 3 16:52:04 rpi-cb-1f-f7 dnsmasq-tftp[1584]: failed sending /srv/tftp/7a6d27f6/kernel8.img to 10.21.0.162
Dec 3 16:52:16 rpi-cb-1f-f7 dnsmasq-tftp[1584]: sent /srv/tftp/7a6d27f6/kernel8.img to 10.21.0.162
Dec 3 16:52:37 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPDISCOVER(eth-local) b8:27:eb:6d:27:f6
Dec 3 16:52:37 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPOFFER(eth-local) 10.21.0.162 b8:27:eb:6d:27:f6
Dec 3 16:52:37 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPREQUEST(eth-local) 10.21.0.162 b8:27:eb:6d:27:f6
Dec 3 16:52:37 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPACK(eth-local) 10.21.0.162 b8:27:eb:6d:27:f6
Dec 3 16:52:39 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPDISCOVER(eth-local) b8:27:eb:6d:27:f6
Dec 3 16:52:39 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPOFFER(eth-local) 10.21.0.162 b8:27:eb:6d:27:f6
Dec 3 16:52:39 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPREQUEST(eth-local) 10.21.0.162 b8:27:eb:6d:27:f6
Dec 3 16:52:39 rpi-cb-1f-f7 dnsmasq-dhcp[1584]: DHCPACK(eth-local) 10.21.0.162 b8:27:eb:6d:27:f6
Dec 3 16:52:39 rpi-cb-1f-f7 rpc.mountd[1807]: authenticated mount request from 10.21.0.162:935 for /srv/nfs/rpi/bullseye/root/merged (/srv/nfs/rpi/bullseye/root/merged)
docs and scripts used to build the server:
https://github.com/CarlFK/pici/blob/main/setup.md
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