Hi Simon,Attached please find the dump file of the command "tcpdump -s 0 -w capturefile". Let me know if you need more info.
Thank you very much.
Steven On 1/24/2017 AM 05:25, Simon Kelley wrote:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Thanks for the reply. Please could you repeat the tcpdump using the command tcpdump -s 0 -w capturefile and send me the resulting file? That has far more information than tcpdump prints. Cheers, Simon. On 20/01/17 08:39, Steven Shiau wrote:Hi Simon, Thanks for your reply. I am answering you in the following. On 2017/01/20 06:47, Simon Kelley wrote:Your example 3 - I'm confused why that shouldn't work - the PXE client seems to be making further requests which are bring ignored. Would it be possible for you to get a packet dump of that exchange using tcpdump?$ sudo tcpdump -ni ens38 'udp port 67 and udp port 68' tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on ens38, link-type EN10MB (Ethernet), capture size 262144 bytes 16:18:33.208355 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:0c:29:1d:9a:d1, length 347 16:18:36.205647 IP 192.168.22.254.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 341 16:18:36.385548 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:0c:29:1d:9a:d1, length 359 16:18:36.386212 IP 192.168.22.254.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 341 ^C 4 packets captured 4 packets received by filter 0 packets dropped by kernelExample 4 looks quite hopeful - the client is succerssfully downloading the bootx64.efi file (ignore the error before, that's just testing for the existance of the file. Can you see what's displayed on the client system at this point?It's blank screen due to the background_image for grub is not downloaded, and in the end the grub shows no grub.cfg error, as attached. That format is from the grub prefix we added by: ======================================= set prefix=(tftp)/grub-efi.cfg echo "Grub CPU and platform: \$grub_cpu, \$grub_platform" echo 'Network status: ' net_ls_cards net_ls_addr net_ls_routes tr --set pretty_mac x: x- \$net_default_mac echo "Loading config file \$prefix/grub.cfg-01-\$pretty_mac..." configfile \$prefix/grub.cfg-01-\$pretty_mac echo "Loading config file \$prefix/grub.cfg-\$net_default_ip..." configfile \$prefix/grub.cfg-\$net_default_ip echo "Loading config file: \$prefix/grub.cfg" configfile \$prefix/grub.cfg echo "Could not find config file \$prefix/grub.cfg-\$pretty_mac, \$prefix/grub.cfg-\$net_default_ip or \$prefix/grub.cfg!" sleep 15 ======================================= This is exactly the same problem as mentioned here: http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2016q4/010931.htmli.e., only grub efi is downloaded, while the rest of required files arenot downloaded. As I mentioned for comparison, for non-proxy mode with same configuration, it works well. Thanks again. Steven _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss-----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBCAAGBQJYhnTjAAoJEBXN2mrhkTWiHX8QAJhjmt1VYRoJ3DuaA6f3s9o+ Tpoie2+4VgFHf3q/wQjq+miQ+da75+0sii9UAdjBtAAHDgLdyzPJSxCHU3neKYYF dY8ww789lJlUAyvmvKm7Pnv3psMWhy22WLxeJGFXPIz+DjpH+tatZ507ZTQ7946o nbTPdnfOO5ADF/Spuors6ioB+cmyZD9cPASSvMUQm7EwunBpAORB2S11ZRbeqSb/ 84EdzTTtWomq7oP4NtSV98SDo0sTH2MYQtF1ht4INlutQs/zOP6P7NuzdFFJLcb8 Bieq1FYWxK6x4FcTqNdw9SJJon/jRjoxhF3Lvovkwb/00RuQuJRHqHpw+laY6yNA MGS5LOIps/fIP42gxs7zftgqvfXVMfBLPUDRS3G+IwOZeteKvzNGwV0LrGFGKcZZ iRDRAIhWH8RImb6gSpt1YXNxyR6Or1m0IuqR+jvYPOjtmXBjRYupZ89B0FKHR9jv r2tJKSVq/uJa4ScW5R8ezGxaQB8iVFFj6CKDWeWEKxb4NxJUYrJ8RVb1IhAxZJUg 6EqXAZ/tvsIDRlveXk1nMqJ12pJlA68mnLzQ4Z5yarGTsoi6zlLecyhQkThp/LxP E4lGqyuJEamggwyLd0WUYH7TMqXimCd9Nyv36rurfDZOVbT3G/JaS980SkTbsjZ2 c6JPXEqLshQyjdbht/1b =msps -----END PGP SIGNATURE----- _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
-- Steven Shiau <steven _at_ stevenshiau org> Public Key Server PGP Key ID: 4096R/47CF935C Fingerprint: 0240 1FEB 695D 7112 62F0 8796 11C1 12DA 47CF 935C
capturefile.gz
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