Am 02.01.2019 um 16:09 schrieb Nicolas Kovacs <info at microlinux.fr>: > > My local server is running CentOS 7. The machine has two NICs and is > acting as a gateway. For DHCP and DNS, I'm using Dnsmasq. I have a > strange little problem with local hostname resolution. Before going into > more details, here's my configuration. > > [root at nestor:~] # ifconfig > enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 > inet 192.168.0.2 netmask 255.255.255.0 broadcast 192.168.0.255 > ether 2c:27:d7:15:54:a1 txqueuelen 1000 (Ethernet) > RX packets 17122 bytes 17596130 (16.7 MiB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 13426 bytes 2144915 (2.0 MiB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > device interrupt 18 memory 0xfe8e0000-fe900000 > > enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 > inet 192.168.2.1 netmask 255.255.255.0 broadcast 192.168.2.255 > ether 00:22:64:8a:4c:c2 txqueuelen 1000 (Ethernet) > RX packets 6597320 bytes 9692134059 (9.0 GiB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 534283 bytes 57365155 (54.7 MiB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > device interrupt 16 memory 0xfe9e0000-fea00000 > > [root at nestor:~] # cat /etc/hostname > nestor > > [root at nestor:~] # cat /etc/hosts > # /etc/hosts > 127.0.0.1 localhost.localdomain localhost > 192.168.2.1 nestor.microlinux.lan nestor > 192.168.2.252 hp-officejet.microlinux.lan hp-officejet > 192.168.2.253 nas.microlinux.lan nas > 192.168.2.254 wifi.microlinux.lan wifi > > [root at nestor:~] # cat /etc/resolv.conf > # /etc/resolv.conf > nameserver 127.0.0.1 > > [root at nestor:~] # cat /etc/dnsmasq.conf > # /etc/dnsmasq.conf > domain-needed > bogus-priv > interface=enp3s0 > dhcp-range=192.168.2.100,192.168.2.200,24h > local=/microlinux.lan/ > domain=microlinux.lan > expand-hosts > # Cloudflare > server=1.1.1.1 > server=1.0.0.1 > # Google > #server=8.8.8.8 > #server=8.8.4.4 > no-resolv > # Google > dhcp-host=D4:85:64:B2:B2:1B,alphamule,192.168.2.2 > dhcp-host=00:1E:C9:43:A7:BF,bernadette,192.168.2.3 > dhcp-host=00:1D:09:15:4A:D8,raymonde,192.168.2.4 > dhcp-host=00:1E:C9:42:84:7B,amandine,192.168.2.5 > dhcp-host=B8:CA:3A:D6:5A:43,1C:3E:84:32:7E:87,buzz,192.168.2.6 > dhcp-host=90:E6:BA:CF:04:8F,64:70:02:9A:AC:93,balthazar,192.168.2.7 > dhcp-host=08:00:27:00:00:01,centosbox,192.168.2.10 > dhcp-host=08:00:27:00:00:02,susebox,192.168.2.11 > dhcp-host=10:62:E5:D4:95:60,hp-officejet,192.168.2.252 > dhcp-host=00:11:32:26:63:A5,nas,192.168.2.253 > > Now here's the problem. Some of the hostname are correctly resolved, > while others are not. > ... DHCP names are registered in DNS when the clients are "online" ... -- LF