On Sat, May 14, 2022 at 02:53:51AM +0200, Kamil via Dnsmasq-discuss wrote: > > On 11/05/2022 12:41, Kamil via Dnsmasq-discuss wrote: > > > Hi! > > > I've configured Dnsmasq with the following config: > > > > > > interface=eth0 > > > bind-interfaces > > > dhcp-option=3,192.168.6.1 > > > dhcp-option=6,8.8.8.8 > > > set long-lasting records. > > > dhcp-range=192.168.6.11,192.168.6.20,255.255.255.0,12h > > > > > > > > > And most of the devices work just fine (here is the example syslog): > > > > > > May 10 16:25:11 myhost dnsmasq-dhcp[1862]: DHCP packet received on > > > eth0 which has no address > > > May 10 16:25:12 myhost dhcpcd[740]: eth0: carrier acquired > > > May 10 16:25:12 myhost kernel: [ 1598.601129] bcmgenet > > > fd580000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off > > > May 10 16:25:12 myhost dhcpcd[740]: eth0: IAID 01:XX:XX:90 > > > May 10 16:25:12 myhost dhcpcd[740]: eth0: adding address <mac> > > > May 10 16:25:12 myhost dhcpcd[740]: eth0: probing address > > > 192.168.6.1/24 <http://192.168.6.1/24> > > > May 10 16:25:12 myhost avahi-daemon[384]: Joining mDNS multicast > > > group on interface eth0.IPv6 with address fe80::XX:XX:XX:d2c. > > > May 10 16:25:12 myhost avahi-daemon[384]: New relevant interface > > > eth0.IPv6 for mDNS. > > > May 10 16:25:12 myhost avahi-daemon[384]: Registering new address > > > record for fe80::XX:XX:XX:d2c on eth0.*. > > > May 10 16:25:12 myhost dhcpcd[740]: eth0: soliciting an IPv6 router > > > May 10 16:25:12 myhost dnsmasq-dhcp[1862]: DHCP packet received on > > > eth0 which has no address > > > May 10 16:25:14 myhost dnsmasq-dhcp[1862]: DHCP packet received on > > > eth0 which has no address > > > May 10 16:25:16 myhost dnsmasq-dhcp[1862]: DHCP packet received on > > > eth0 which has no address > > > May 10 16:25:16 myhost dhcpcd[740]: eth0: using static address > > > 192.168.6.1/24 <http://192.168.6.1/24> > > > May 10 16:25:17 myhost avahi-daemon[384]: Joining mDNS multicast > > > group on interface eth0.IPv4 with address 192.168.6.1. > > > May 10 16:25:17 myhost avahi-daemon[384]: New relevant interface > > > eth0.IPv4 for mDNS. > > > May 10 16:25:17 myhost dhcpcd[740]: eth0: adding route to > > > 192.168.6.0/24 <http://192.168.6.0/24> > > > May 10 16:25:17 myhost avahi-daemon[384]: Registering new address > > > record for 192.168.6.1 on eth0.IPv4. > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 available DHCP > > > range: 192.168.6.11 -- 192.168.6.20 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 > > > DHCPDISCOVER(eth0) <mac> > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 tags: known, > > > eth0 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 DHCPOFFER(eth0) > > > 192.168.6.15 <mac> > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 requested > > > options: 1:netmask, 3:router, 28:broadcast, 6:dns-server > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 next server: > > > 192.168.6.1 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 1 > > > option: 53 message-type 2 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 54 server-identifier 192.168.6.1 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 51 lease-time infinite > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 1 netmask 255.255.255.0 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 28 broadcast 192.168.6.255 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 3 router 192.168.6.1 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 6 dns-server 192.168.6.1 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 available DHCP > > > range: 192.168.6.11 -- 192.168.6.20 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 > > > DHCPREQUEST(eth0) 192.168.6.15 <mac> > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 tags: known, > > > eth0 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 DHCPACK(eth0) > > > 192.168.6.15 <mac> > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 requested > > > options: 1:netmask, 3:router, 28:broadcast, 6:dns-server > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 next server: > > > 192.168.6.1 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 1 > > > option: 53 message-type 5 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 54 server-identifier 192.168.6.1 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 51 lease-time infinite > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 1 netmask 255.255.255.0 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 28 broadcast 192.168.6.255 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 3 router 192.168.6.1 > > > May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4 > > > option: 6 dns-server 192.168.6.1 > > > May 10 16:25:26 myhost dhcpcd[740]: eth0: no IPv6 Routers available > > > > > > > > > Except one - the RTMU86 NFC reader to which Dnsmasq doesn't assign the > > > IP address. Here syslog shows: > > > > > > May 10 16:26:15 myhost dhcpcd[740]: eth0: carrier acquired > > > May 10 16:26:15 myhost kernel: [ 1661.024489] bcmgenet > > > fd580000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off > > > May 10 16:26:15 myhost dhcpcd[740]: eth0: IAID 01:XX:XX:90 > > > May 10 16:26:15 myhost dhcpcd[740]: eth0: adding address > > > fe80::XX:XX:XX:d2c > > > May 10 16:26:15 myhost dhcpcd[740]: eth0: probing address > > > 192.168.6.1/24 <http://192.168.6.1/24> > > > May 10 16:26:15 myhost avahi-daemon[384]: Joining mDNS multicast > > > group on interface eth0.IPv6 with address fe80::XX:XX:XX:d2c. > > > May 10 16:26:15 myhost avahi-daemon[384]: New relevant interface > > > eth0.IPv6 for mDNS. > > > May 10 16:26:15 myhost avahi-daemon[384]: Registering new address > > > record for fe80::XX:XX:XX:d2c on eth0.*. > > > May 10 16:26:15 myhost dhcpcd[740]: eth0: soliciting an IPv6 router > > > May 10 16:26:17 myhost dnsmasq-dhcp[1862]: DHCP packet received on > > > eth0 which has no address > > > May 10 16:26:20 myhost dhcpcd[740]: eth0: using static address > > > 192.168.6.1/24 <http://192.168.6.1/24> > > > May 10 16:26:20 myhost avahi-daemon[384]: Joining mDNS multicast > > > group on interface eth0.IPv4 with address 192.168.6.1. > > > May 10 16:26:20 myhost avahi-daemon[384]: New relevant interface > > > eth0.IPv4 for mDNS. > > > May 10 16:26:20 myhost avahi-daemon[384]: Registering new address > > > record for 192.168.6.1 on eth0.IPv4. > > > May 10 16:26:20 myhost dhcpcd[740]: eth0: adding route to > > > 192.168.6.0/24 <http://192.168.6.0/24> > > > May 10 16:26:28 myhost dhcpcd[740]: eth0: no IPv6 Routers available > > > May 10 16:26:35 myhost dhcpcd[740]: eth0: carrier lost > > > May 10 16:26:35 myhost kernel: [ 1681.494492] bcmgenet > > > fd580000.ethernet eth0: Link is Down > > > May 10 16:26:35 myhost dhcpcd[740]: eth0: deleting address > > > fe80::XX:XX:XX:d2c > > > May 10 16:26:35 myhost avahi-daemon[384]: Withdrawing address record > > > for fe80::XX:XX:XX:d2c on eth0. > > > May 10 16:26:35 myhost avahi-daemon[384]: Leaving mDNS multicast > > > group on interface eth0.IPv6 with address fe80::XX:XX:XX:d2c. > > > May 10 16:26:35 myhost avahi-daemon[384]: Interface eth0.IPv6 no > > > longer relevant for mDNS. > > > May 10 16:26:35 myhost avahi-daemon[384]: Withdrawing address record > > > for 192.168.6.1 on eth0. > > > May 10 16:26:35 myhost avahi-daemon[384]: Leaving mDNS multicast > > > group on interface eth0.IPv4 with address 192.168.6.1. > > > May 10 16:26:35 myhost avahi-daemon[384]: Interface eth0.IPv4 no > > > longer relevant for mDNS. > > > May 10 16:26:35 myhost dhcpcd[740]: eth0: deleting route to > > > 192.168.6.0/24 <http://192.168.6.0/24> > > > May 10 16:26:38 myhost dhcpcd[740]: eth0: carrier acquired > > > May 10 16:26:38 myhost kernel: [ 1684.565026] bcmgenet > > > fd580000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off > > > May 10 16:26:38 myhost dhcpcd[740]: eth0: IAID 01:79:77:90 > > > May 10 16:26:38 myhost dhcpcd[740]: eth0: adding address > > > fe80::XX:XX:XX:d2c > > > May 10 16:26:38 myhost dhcpcd[740]: eth0: probing address > > > 192.168.6.1/24 <http://192.168.6.1/24> > > > May 10 16:26:38 myhost avahi-daemon[384]: Joining mDNS multicast > > > group on interface eth0.IPv6 with address fe80::XX:XX:XX:d2c. > > > May 10 16:26:38 myhost avahi-daemon[384]: New relevant interface > > > eth0.IPv6 for mDNS. > > > May 10 16:26:38 myhost avahi-daemon[384]: Registering new address > > > record for fe80::XX:XX:XX:d2c on eth0.*. > > > May 10 16:26:38 myhost dnsmasq-dhcp[1862]: DHCP packet received on > > > eth0 which has no address > > > May 10 16:26:39 myhost dhcpcd[740]: eth0: soliciting an IPv6 router > > > May 10 16:26:41 myhost dnsmasq-dhcp[1862]: DHCP packet received on > > > eth0 which has no address > > > May 10 16:26:42 myhost dhcpcd[740]: eth0: using static address > > > 192.168.6.1/24 <http://192.168.6.1/24> > > > May 10 16:26:42 myhost dhcpcd[740]: eth0: adding route to > > > 192.168.6.0/24 <http://192.168.6.0/24> > > > May 10 16:26:42 myhost avahi-daemon[384]: Joining mDNS multicast > > > group on interface eth0.IPv4 with address 192.168.6.1. > > > May 10 16:26:42 myhost avahi-daemon[384]: New relevant interface > > > eth0.IPv4 for mDNS. > > > May 10 16:26:42 myhost avahi-daemon[384]: Registering new address > > > record for 192.168.6.1 on eth0.IPv4. > > > May 10 16:26:52 myhost dhcpcd[740]: eth0: no IPv6 Routers available > > > > > > > > > But when I used isc-dhcp-server with following config: > > > > > > subnet 192.168.6.0 netmask 255.255.255.0 { > > > interface eth0; > > > ddns-update-style none; > > > default-lease-time 600; > > > max-lease-time 3600; > > > authorative; > > > range 192.168.6.11 192.168.6.20; > > > option subnet-mask 255.255.255.0; > > > option routers 192.168.6.1; > > > option domain-name-servers 8.8.8.8; > > > get-lease-hostnames true; > > > use-host-decl-names true; > > > } > > > DHCP packet received on > > > eth0 which has no address > > > > > > then isc-dhcp-server assigns correct IP to RTMU86. > > > Why doesn't Dnsmasq want to assign IP to RTMU86? > > > > In the first log, dnsmasq starts off NOT assigning addresses because > > eth0 doesn't have an IP address, then eth0 gets an IP address via dhcpcd > > and it all starts to work. In the second log, it looks like all the DHCP > > requests happen before the address gets assigned to eth0, so none work. > > > > I don't think this is a specific problem with the RTMU86, it's that your > > configuration is intermittently broken. > > > > > > Simon. > > > > > > It's the same configuration. > 1. I plug one device - it works. > 2. I unplug it and plug the RTMU86 - doesn't work. > 3. I Unplug RTMU86 and plug any other device - it works. > > Nothing changes in the network, nothing changes in the config.
Things that poster is missing: > > > May 10 16:26:35 myhost dhcpcd[740]: eth0: carrier lost > > > May 10 16:26:38 myhost dhcpcd[740]: eth0: carrier acquired and > > > May 10 16:25:17 myhost dhcpcd[740]: eth0: adding route to > > > 192.168.6.0/24 <http://192.168.6.0/24> > > > May 10 16:26:35 myhost dhcpcd[740]: eth0: deleting route to > > > 192.168.6.0/24 <http://192.168.6.0/24> . That are network and configuration changes. Thing that I miss: "Yeah, I unplug and plug cables" in response to > > ... , it's that your configuration is intermittently broken. > The same config in isc-dhcp-server works fine in both cases. Yes, that remark is seen. Same as was seen the first post. Thing different this time: No silence. Goal is a better world. Go all out upon contacting libre software projects. Do tell what is happening at **your** side. If you unplug/plug cables to generate check events, say so. If you have a comparison setup, describe also that setup. If you could not resist to obfuscate information, say explicit that you are mangling data. Be yourself, accept yourself. Full focus on the challenge that you are facing. So please avoid noise like "I'm new". Surely avoid an attitude like "you are the experts, you understand me and you must help me" Do know there are real humans behind the email addresses. _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss
