Ubuntu 20.04.02 64bit. Server Ziel dhcp-server. Problem: Client bekommt keine IP. - dnsmasq ist gestartet:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | Last login: Wed Mar 31 16:01:20 2021 from 192.168.55.100 root@rt4:~# systemctl status dnsmasq ● dnsmasq.service - dnsmasq - A lightweight DHCP and caching DNS server Loaded: loaded (/lib/systemd/system/dnsmasq.service; enabled; vendor preset: enabled) Active: active (running) since Wed 2021-03-31 16:01:56 UTC; 2min 58s ago Process: 4069 ExecStartPre=/usr/sbin/dnsmasq --test (code=exited, status=0/SUCCESS) Process: 4070 ExecStart=/etc/init.d/dnsmasq systemd-exec (code=exited, status=0/SUCCESS) Process: 4090 ExecStartPost=/etc/init.d/dnsmasq systemd-start-resolvconf (code=exited, status=0/SUCCESS) Main PID: 4089 (dnsmasq) Tasks: 1 (limit: 37978) Memory: 2.3M CGroup: /system.slice/dnsmasq.service └─4089 /usr/sbin/dnsmasq -x /run/dnsmasq/dnsmasq.pid -u dnsmasq -7 /etc/dnsmasq.d,.dpkg-dist,.dpkg-old,.dpkg-new --local-service --trust-anchor=.,20326,8,2,e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d Mar 31 16:04:24 rt4 dnsmasq-dhcp[4089]: DHCPDISCOVER(enp88s0) ac:87: Mar 31 16:04:24 rt4 dnsmasq-dhcp[4089]: DHCPOFFER(enp88s0) 192.168.55.78 ac:87: Mar 31 16:04:25 rt4 dnsmasq-dhcp[4089]: DHCPDISCOVER(enp88s0) ac:87: Mar 31 16:04:25 rt4 dnsmasq-dhcp[4089]: DHCPOFFER(enp88s0) 192.168.55.78 ac:87: Mar 31 16:04:29 rt4 dnsmasq-dhcp[4089]: DHCPDISCOVER(enp88s0) ac:87: Mar 31 16:04:29 rt4 dnsmasq-dhcp[4089]: DHCPOFFER(enp88s0) 192.168.55.78 ac:87: Mar 31 16:04:38 rt4 dnsmasq-dhcp[4089]: DHCPDISCOVER(enp88s0) ac:87: Mar 31 16:04:38 rt4 dnsmasq-dhcp[4089]: DHCPOFFER(enp88s0) 192.168.55.78 ac:87: Mar 31 16:04:46 rt4 dnsmasq-dhcp[4089]: DHCPDISCOVER(enp88s0) ac:87: Mar 31 16:04:46 rt4 dnsmasq-dhcp[4089]: DHCPOFFER(enp88s0) 192.168.55.78 ac:87: |
- Netzwerk ist Konfiguriert 2 x Intel Ethernet:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enp88s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 54:b2:03:9e brd ff:ff:ff:ff:ff:ff inet 192.168.55.1/24 brd 192.168.55.255 scope global enp88s0 valid_lft forever preferred_lft forever inet6 fe80::56b2:3ff:fe9e:e3b1/64 scope link valid_lft forever preferred_lft forever 3: enp89s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 54:b2:03:9e brd ff:ff:ff:ff:ff:ff inet 192.168.3.161/24 brd 192.168.3.255 scope global dynamic enp89s0 valid_lft 4517sec preferred_lft 4517sec inet6 fe80::56b2:3ff:fe9e:d1e4/64 scope link valid_lft forever preferred_lft forever 4: wlo1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether fc:b3:bc:c4 brd ff:ff:ff:ff:ff:ff 5: vlan.33@enp88s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 54:b2:03:9e brd ff:ff:ff:ff:ff:ff inet 192.168.33.1/24 brd 192.168.33.255 scope global vlan.33 valid_lft forever preferred_lft forever inet6 fe80::56b2:3ff:fe9e:e3b1/64 scope link valid_lft forever preferred_lft forever |
-meine dnsmasq konfig (gekürzt um alles was nicht gebraucht wurde):
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | port=53 domain-needed bogus-priv resolv-file=/etc/resolv.conf strict-order interface=enp88s0 interface=vlan.33@enp88s0 listen-address=127.0.0.1 listen-address=192.168.55.1 listen-address=192.168.33.1 no-dhcp-interface=enp89s0 expand-hosts domain=in.meine.de dhcp-range=interface:enp88s0,192.168.55.50,192.168.55.150,3h dhcp-range=interface:vlan.33@enp88s0,192.168.33.2,192.168.33.150,3h dhcp-host=11:22:33:44:55:66,fred,192.168.55.180,45m dhcp-option=interface:enp88s0,option:router,192.168.55.1 dhcp-option=interface:vlan.33@enp88s0,option:router,192.168.33.1 dhcp-option=interface:enp88s0,option:ntp-server,192.168.55.1 dhcp-option=interface:enp88s0,option:dns-server,192.168.55.1 dhcp-option=interface:enp88s0,option:netmask,255.255.255.0 dhcp-option=interface:vlan.33@enp88s0,option:ntp-server,192.168.33.1 dhcp-option=interface:vlan.33@enp88s0,option:dns-server,192.168.33.1 dhcp-option=interface:vlan.33@enp88s0,option:netmask,255.255.255.0 |
- firewall regeln sind keine gesetzt:
1 2 3 4 5 6 7 8 9 10 | root@rt4:~# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination root@rt4:~# |
ich hoffe ihr könnt mir helfen, meine vermutung war es das irgendeine firewall regel das verhindert das ich eine ip am client bekomme. sollten noch info fehlen, bitte eine kurze info.