Follow up from "RaspberryPi PCAP file" thread. On Sat, Dec 4, 2021 at 1:42 PM Geert Stappers wrote: > On Sat, Dec 04, 2021 at 12:11:13PM -0800, Carl Karsten wrote: > > On Sat, Dec 4, 2021 at 10:12 AM Geert Stappers wrote: > > > > > > My observation on the PCAP file > > > * there are several stages > > > * each stage starts with a (partial) DHCP session > > > > > > > > > The first stage: > > > * DHCP Discover with option 97, Client Identifier, > > > f6 27 6d 7a f6 27 6d 7a f6 27 6d 7a f6 27 6d 7a > > > from client > > > * DHCP Offer with filename 'ipxe/undionly.kpxe' > > > from server ..... > > > The second stage: > > > * DHCP Discover with option 97, Client Identifier, > > > f6 27 6d 7a f6 27 6d 7a f6 27 6d 7a f6 27 6d 7a > > > from client (yes, that is the same identifier) > > > * DHCP Offer with filename 'ipxe/undionly.kpxe' > > > from server (yes, that is the same filename) ..... > > > > My pi netboot needs are basically satisfied, > > OK > > And what about the dnsmasq needs that did get us here??? >
Hmm.. I'm not out of the weeds just yet. > > > The first stage: > > > * DHCP Discover with option 97, Client Identifier, > > > f6 27 6d 7a f6 27 6d 7a f6 27 6d 7a f6 27 6d 7a I need access to that value. That's the serial number f6 27 6d 7a repeated 4 times. but not DNSMASQ_CLIENT_ID=01:b8:27:eb:6d:27:f6 Here is a quick test I did: dhcp-script=/root/dnsmasq-test1.sh $ cat /root/dnsmasq-test1.sh #!/bin/bash -x echo $* >> /tmp/dnsmasq-test1.txt /usr/bin/env >> /tmp/dnsmasq-test1.txt $ /tmp/dnsmasq-test1.txt old b8:27:eb:6d:27:f6 10.21.0.162 raspberrypi DNSMASQ_TAGS=eth-local DNSMASQ_INTERFACE=eth-local DNSMASQ_VENDOR_CLASS=dhcpcd-8.1.2:Linux-5.10.63-v8+:aarch64:BCM2835 LANGUAGE=en_US:en DNSMASQ_TIME_REMAINING=21600 DNSMASQ_CLIENT_ID=01:b8:27:eb:6d:27:f6 PIDFILE=/run/dnsmasq/dnsmasq.pid DNSMASQ_LEASE_EXPIRES=1638680174 PWD=/ LANG=en_US.UTF-8 INVOCATION_ID=3bcf8de10dbb44e6b6d844ab5fa06d17 DNSMASQ_REQUESTED_OPTIONS=1,121,33,3,6,12,15,26,28,51,54,58,59,119 SHLVL=1 DNSMASQ_DOMAIN=video.debconf.org JOURNAL_STREAM=8:28400 PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin DNSMASQ_SUPPLIED_HOSTNAME=raspberrypi _=/usr/bin/env -- Community M _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss
