On 16/04/2020 15:40, Josh H wrote: > > First, answer a simple question the answer to which I may have missed. > Is dnsmasq logging the receipt of DHCPDISCOVER messages? Can we see the > whole log showing that? > > > Based on the config I provided at the initial message, I have the log > file writing to /var/log/dnsmasq.log. This is the whole content of that > file: > > root@dns:~# cat /var/log/dnsmasq.log > Apr 16 15:36:50 dnsmasq[1695]: started, version 2.80 DNS disabled > Apr 16 15:36:50 dnsmasq[1695]: compile time options: IPv6 GNU-getopt > DBus i18n IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth DNSSEC > loop-detect inotify dumpfile > Apr 16 15:36:50 dnsmasq-dhcp[1695]: DHCP, IP range 192.168.1.3 -- > 192.168.1.8, lease time 12h > > No mention of the DHCPDiscover being acknowledged. > > The next stage is to run dnsmasq under strace (check back here if you > need instructions on that) and see what system calls it's making. > > > What command would I need to run for this? And what service is best to > upload the strace result, pastebin?
sudo strace -o /tmp/logfile /usr/bin/dnsmasq -d Probably best to email the result to me direct. Cheers, Simon. > > Thanks, > Josh > > On Thu, 16 Apr 2020 at 12:49, Simon Kelley <si...@thekelleys.org.uk > <mailto:si...@thekelleys.org.uk>> wrote: > > > > On 15/04/2020 19:27, Josh H wrote: > > > It's difficult for me to share the config outright as I'm using a > > modified version of netkit that I've updated to a much newer kernel > > - http://netkit-ng.github.io/. The netkit version that is available on > > that link is the one that worked with dnsmasq just fine, and that > > version was 2.62 and kernel 3.2. However I've updated it and am > running > > 2.80 and kernel 5.6. > > > > Anything else I can provide you with that might help? It's a very > unique > > setup so I appreciate it's probably not the easiest thing to try and > > debug. > > > > First, answer a simple question the answer to which I may have missed. > Is dnsmasq logging the receipt of DHCPDISCOVER messages? Can we see the > whole log showing that? > > The next stage is to run dnsmasq under strace (check back here if you > need instructions on that) and see what system calls it's making. > > > Simon. > > > _______________________________________________ > Dnsmasq-discuss mailing list > Dnsmasq-discuss@lists.thekelleys.org.uk > <mailto:Dnsmasq-discuss@lists.thekelleys.org.uk> > http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss > _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
