Re: [Dnsmasq-discuss] DHCP renew and rebind time weirdness

2019-11-29 Thread Johan Kruger
Hi, Just to add to the comedy, and set folks' minds at ease about dnsmasq... When I started running dhcpdump to do more diagnostics (when isc-dhcp-server stared responding with 5 minute lease times) I discovered that the nmap command I was using to test was specifically requesting a 1 secon

Re: [Dnsmasq-discuss] CPU spinning bug, possibly related to SSHFP queries

2019-11-29 Thread Geert Stappers
On 29-11-2019 07:51, Tore Anderson wrote: > * Vladislav Grishenko > >> Can you try to capture dns exchange to dnsmasq (on lo interface) and from it >> (on your nic interface) both at the same time? >> $ tcpdump -i lo port 53 -w /path/to/dns-lo.pcap >> $ tcpdump -i port 53 -w /path/to/dns-ext.pca

[Dnsmasq-discuss] dnsmasq sending truncated DHCPv6 packets

2019-11-29 Thread Derek Higgins
Hi, I've been trying to track down the reason for intermittent PXE failures while using DHCPv6, the failed PXE attempts seem to correlate with incomplete dhcp6 advertise packets. e.g. in this sequence, the advertise packet length is 62 (all of the failed attempts I've found happened with packets

Re: [Dnsmasq-discuss] dnsmasq sending truncated DHCPv6 packets

2019-11-29 Thread Geert Stappers
On Fri, Nov 29, 2019 at 03:55:17PM +, Derek Higgins wrote: > Hi, > > I've been trying to track down the reason for intermittent PXE > failures while using DHCPv6, > the failed PXE attempts seem to correlate with incomplete dhcp6 > advertise packets. > > e.g. in this sequence, the advertise pa

Re: [Dnsmasq-discuss] DHCP renew and rebind time weirdness

2019-11-29 Thread Geert Stappers
On Fri, Nov 29, 2019 at 10:15:22AM +0200, Johan Kruger wrote: > On Thu, Nov 28, 2019 at 09:49:43PM +0200, Johan Kruger wrote: > > Hi, > > > > I have a fairly simple DHCP setup on a Raspbian box, using dnsmasq > > 2.80. The relavant options in /etc/dnsmasq.conf are (yes, my home LAN > > is 10.1

Re: [Dnsmasq-discuss] CPU spinning bug, possibly related to SSHFP queries

2019-11-29 Thread Tore Anderson
* Geert Stappers >> Here are the corresponding log lines from Dnsmasq: >> >> nov. 29 07:15:53.964856 sloth.fud.no dnsmasq[48069]: query[A] >> l1-g9-osl2.n.bitbit.net from 127.0.0.1 >> nov. 29 07:15:53.965060 sloth.fud.no dnsmasq[48069]: forwarded >> l1-g9-osl2.n.bitbit.net to 87.238.33.1 >> nov.

Re: [Dnsmasq-discuss] CPU spinning bug, possibly related to SSHFP queries

2019-11-29 Thread Geert Stappers
On Fri, Nov 29, 2019 at 09:11:45PM +0100, Tore Anderson wrote: > * Geert Stappers > > >> Here are the corresponding log lines from Dnsmasq: > >> > >> nov. 29 07:15:53.964856 sloth.fud.no dnsmasq[48069]: query[A] > >> l1-g9-osl2.n.bitbit.net from 127.0.0.1 > >> nov. 29 07:15:53.965060 sloth.fud.no