How to passthrough Wifi DNS and internet access to DHCP client

Question

I have a laptop that connects to wifi for internet access. This computer is running Linux (Fedora), and it is acting as a DHCP server for another (ubuntu linaro) computer that does not have a wifi adapter. The laptop and the other computer connect through a crossover cable through their respective standard ethernet ports. So laptop is DHCP server, and other computer is DHCP client.

I have verified that the other computer is correctly getting a DHCP address from the laptop. However, ping www.yahoo.com doesn't work. I can also see in /etc/resolv.conf of the DHCP client computer that the correct settings are there from the DHCP server.

I have not made any changes to iptables.

My question is, how do I tell the laptop to pass DNS requests and internet access from the dhcp client to the wifi network? Do I need to run a DNS daemon also?

[idf@localhost ~]$ cat /proc/sys/net/ipv4/ip_forward 
1

[idf@localhost ~]$

Here is the output of ifconfig -a on the laptop (DHCP server)

[idf@localhost ~]$ ifconfig -a
enp1s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.1  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::28c:faff:feac:2de0  prefixlen 64  scopeid 0x20<link>
        ether 00:8c:fa:ac:2d:e0  txqueuelen 1000  (Ethernet)
        RX packets 899  bytes 123800 (120.8 KiB)
        RX errors 0  dropped 8  overruns 0  frame 0
        TX packets 1338  bytes 131506 (128.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 16  

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 6557  bytes 1142539 (1.0 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 6557  bytes 1142539 (1.0 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
        inet6 fe80::5054:ff:fe0c:77c4  prefixlen 64  scopeid 0x20<link>
        ether 52:54:00:0c:77:c4  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 11  bytes 1174 (1.1 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

virbr0-nic: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether 52:54:00:0c:77:c4  txqueuelen 500  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.128.231.168  netmask 255.255.255.128  broadcast 10.128.231.255
        inet6 fe80::2ae3:47ff:febd:bc4a  prefixlen 64  scopeid 0x20<link>
        ether 28:e3:47:bd:bc:4a  txqueuelen 1000  (Ethernet)
        RX packets 10004803  bytes 10357195255 (9.6 GiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 7473957  bytes 1022964388 (975.5 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[idf@localhost ~]$

Here is my dhcpd.conf file

[idf@localhost ~]$ more /etc/dhcp/dhcpd.conf 
ddns-update-style interim;                                   # Required for dhcp 3.0+ / Red Hat 8.0+
ignore client-updates;

subnet 192.168.1.0 netmask 255.255.255.0 {

        range 192.168.1.128 192.168.1.254;                   # Range of IP addresses to be issued to DHCP clients
           option subnet-mask              255.255.255.0;    # Default subnet mask to be used by DHCP clients
           option broadcast-address        192.168.1.255;    # Default broadcastaddress to be used by DHCP clients
           option routers                  192.168.1.1;      # Default gateway to be used by DHCP clients
           option domain-name              "synctrading.org";
           option domain-name-servers      192.168.1.1;           # Default DNS to be used by DHCP clients
           option netbios-name-servers     192.168.1.100;    # Specify a WINS server for MS/Windows clients.
                                                             # (Optional. Specify if used on your network)

#         DHCP requests are not forwarded. Applies when there is more than one ethernet device and forwarding is configured.
#       option ipforwarding off;

        default-lease-time 21600;                            # Amount of time in seconds that a client may keep the IP address
        max-lease-time 43200;

        option time-offset              -18000;              # Eastern Standard Time
#       option ntp-servers              192.168.1.1;         # Default NTP server to be used by DHCP clients
#       option netbios-name-servers     192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless you understand Netbios very well
#       option netbios-node-type 2;
}

[idf@localhost ~]$

EDIT 1

After folllowing the instructions below (I changed the nameservers to google dns in the dhcpd.conf file), I did a sudo tcpdump -i enp1s0 the laptop. Then from the DHCP client, I tried ping www.yahoo.com and some interesting stuff prints out in the dump on the DHCP server. "admin prohibited" is interesting, but I don't know what it means or how to fix it.

22:46:31.697964 IP 192.168.1.128.42318 > google-public-dns-a.google.com.domain: 15883+ A? www.yahoo.com. (31)
22:46:31.698068 IP localhost.localdomain > 192.168.1.128: ICMP host google-public-dns-a.google.com unreachable - admin prohibited, length 67
22:46:31.698593 IP 192.168.1.128.56805 > alu7750testscr.xyz1.gblx.mgmt.Level3.net.domain: 15883+ A? www.yahoo.com. (31)
22:46:31.698683 IP localhost.localdomain > 192.168.1.128: ICMP host alu7750testscr.xyz1.gblx.mgmt.Level3.net unreachable - admin prohibited, length 67
22:46:31.699123 IP 192.168.1.128.40441 > google-public-dns-a.google.com.domain: 15883+ A? www.yahoo.com. (31)
22:46:31.699180 IP localhost.localdomain > 192.168.1.128: ICMP host google-public-dns-a.google.com unreachable - admin prohibited, length 67
22:46:31.699598 IP 192.168.1.128.60984 > alu7750testscr.xyz1.gblx.mgmt.Level3.net.domain: 15883+ A? www.yahoo.com. (31)
22:46:36.706262 IP 192.168.1.128.46076 > alu7750testscr.xyz1.gblx.mgmt.Level3.net.domain: 5928+ A? www.yahoo.com.synctrading.org. (47)
22:46:36.706356 IP localhost.localdomain > 192.168.1.128: ICMP host alu7750testscr.xyz1.gblx.mgmt.Level3.net unreachable - admin prohibited, length 83
22:46:36.707346 IP 192.168.1.128.ssh > localhost.localdomain.41245: Flags [P.], seq 1661:1729, ack 576, win 330, options [nop,nop,TS val 35236 ecr 4294953343], length 68
22:46:36.707409 IP localhost.localdomain.41245 > 192.168.1.128.ssh: Flags [.], ack 1729, win 277, options [nop,nop,TS val 4294958364 ecr 35236], length 0
22:46:36.707781 IP 192.168.1.128.ssh > localhost.localdomain.41245: Flags [P.], seq 1729:1765, ack 576, win 330, options [nop,nop,TS val 35236 ecr 4294958364], length 36
22:46:36.707823 IP localhost.localdomain.41245 > 192.168.1.128.ssh: Flags [.], ack 1765, win 277, options [nop,nop,TS val 4294958364 ecr 35236], length 0
22:46:36.710622 IP 192.168.1.128.ssh > localhost.localdomain.41245: Flags [P.], seq 1765:1833, ack 576, win 330, options [nop,nop,TS val 35237 ecr 4294958364], length 68
22:46:36.710663 IP localhost.localdomain.41245 > 192.168.1.128.ssh: Flags [.], ack 1833, win 277, options [nop,nop,TS val 4294958367 ecr 35237], length 0
22:46:46.577998 AoE length 46, Ver 1, Flags: [none]

EDIT 2

[idf@localhost ~]$ sudo iptables -L -n
[sudo] password for idf: 
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0            udp dpt:53
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0            tcp dpt:53
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0            udp dpt:67
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0            tcp dpt:67
ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0            ctstate RELATED,ESTABLISHED
ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0           
INPUT_direct  all  --  0.0.0.0/0            0.0.0.0/0           
INPUT_ZONES_SOURCE  all  --  0.0.0.0/0            0.0.0.0/0           
INPUT_ZONES  all  --  0.0.0.0/0            0.0.0.0/0           
ACCEPT     icmp --  0.0.0.0/0            0.0.0.0/0           
DROP       all  --  0.0.0.0/0            0.0.0.0/0            ctstate INVALID
REJECT     all  --  0.0.0.0/0            0.0.0.0/0            reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     all  --  0.0.0.0/0            192.168.122.0/24     ctstate RELATED,ESTABLISHED
ACCEPT     all  --  192.168.122.0/24     0.0.0.0/0           
ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0           
REJECT     all  --  0.0.0.0/0            0.0.0.0/0            reject-with icmp-port-unreachable
REJECT     all  --  0.0.0.0/0            0.0.0.0/0            reject-with icmp-port-unreachable
ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0            ctstate RELATED,ESTABLISHED
ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0           
FORWARD_direct  all  --  0.0.0.0/0            0.0.0.0/0           
FORWARD_IN_ZONES_SOURCE  all  --  0.0.0.0/0            0.0.0.0/0           
FORWARD_IN_ZONES  all  --  0.0.0.0/0            0.0.0.0/0           
FORWARD_OUT_ZONES_SOURCE  all  --  0.0.0.0/0            0.0.0.0/0           
FORWARD_OUT_ZONES  all  --  0.0.0.0/0            0.0.0.0/0           
ACCEPT     icmp --  0.0.0.0/0            0.0.0.0/0           
DROP       all  --  0.0.0.0/0            0.0.0.0/0            ctstate INVALID
REJECT     all  --  0.0.0.0/0            0.0.0.0/0            reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0            udp dpt:68
OUTPUT_direct  all  --  0.0.0.0/0            0.0.0.0/0           

Chain FORWARD_IN_ZONES (1 references)
target     prot opt source               destination         
FWDI_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
FWDI_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
FWDI_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
FWDI_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
FWDI_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 

Chain FORWARD_IN_ZONES_SOURCE (1 references)
target     prot opt source               destination         

Chain FORWARD_OUT_ZONES (1 references)
target     prot opt source               destination         
FWDO_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
FWDO_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
FWDO_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
FWDO_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
FWDO_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 

Chain FORWARD_OUT_ZONES_SOURCE (1 references)
target     prot opt source               destination         

Chain FORWARD_direct (1 references)
target     prot opt source               destination         

Chain FWDI_FedoraWorkstation (5 references)
target     prot opt source               destination         
FWDI_FedoraWorkstation_log  all  --  0.0.0.0/0            0.0.0.0/0           
FWDI_FedoraWorkstation_deny  all  --  0.0.0.0/0            0.0.0.0/0           
FWDI_FedoraWorkstation_allow  all  --  0.0.0.0/0            0.0.0.0/0           

Chain FWDI_FedoraWorkstation_allow (1 references)
target     prot opt source               destination         

Chain FWDI_FedoraWorkstation_deny (1 references)
target     prot opt source               destination         

Chain FWDI_FedoraWorkstation_log (1 references)
target     prot opt source               destination         

Chain FWDO_FedoraWorkstation (5 references)
target     prot opt source               destination         
FWDO_FedoraWorkstation_log  all  --  0.0.0.0/0            0.0.0.0/0           
FWDO_FedoraWorkstation_deny  all  --  0.0.0.0/0            0.0.0.0/0           
FWDO_FedoraWorkstation_allow  all  --  0.0.0.0/0            0.0.0.0/0           

Chain FWDO_FedoraWorkstation_allow (1 references)
target     prot opt source               destination         

Chain FWDO_FedoraWorkstation_deny (1 references)
target     prot opt source               destination         

Chain FWDO_FedoraWorkstation_log (1 references)
target     prot opt source               destination         

Chain INPUT_ZONES (1 references)
target     prot opt source               destination         
IN_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
IN_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
IN_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
IN_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
IN_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 

Chain INPUT_ZONES_SOURCE (1 references)
target     prot opt source               destination         

Chain INPUT_direct (1 references)
target     prot opt source               destination         

Chain IN_FedoraWorkstation (5 references)
target     prot opt source               destination         
IN_FedoraWorkstation_log  all  --  0.0.0.0/0            0.0.0.0/0           
IN_FedoraWorkstation_deny  all  --  0.0.0.0/0            0.0.0.0/0           
IN_FedoraWorkstation_allow  all  --  0.0.0.0/0            0.0.0.0/0           

Chain IN_FedoraWorkstation_allow (1 references)
target     prot opt source               destination         
ACCEPT     udp  --  0.0.0.0/0            224.0.0.251          udp dpt:5353 ctstate NEW
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0            udp dpt:137 ctstate NEW
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0            udp dpt:138 ctstate NEW
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0            tcp dpt:22 ctstate NEW
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0            udp dpts:1025:65535 ctstate NEW
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0            tcp dpts:1025:65535 ctstate NEW

Chain IN_FedoraWorkstation_deny (1 references)
target     prot opt source               destination         

Chain IN_FedoraWorkstation_log (1 references)
target     prot opt source               destination         

Chain OUTPUT_direct (1 references)
target     prot opt source               destination         
[idf@localhost ~]$

EDIT 3

[idf@localhost ~]$ sudo iptables -L -n -t nat
Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination         
PREROUTING_direct  all  --  0.0.0.0/0            0.0.0.0/0           
PREROUTING_ZONES_SOURCE  all  --  0.0.0.0/0            0.0.0.0/0           
PREROUTING_ZONES  all  --  0.0.0.0/0            0.0.0.0/0           

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
OUTPUT_direct  all  --  0.0.0.0/0            0.0.0.0/0           

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination         
RETURN     all  --  192.168.122.0/24     224.0.0.0/24        
RETURN     all  --  192.168.122.0/24     255.255.255.255     
MASQUERADE  tcp  --  192.168.122.0/24    !192.168.122.0/24     masq ports: 1024-65535
MASQUERADE  udp  --  192.168.122.0/24    !192.168.122.0/24     masq ports: 1024-65535
MASQUERADE  all  --  192.168.122.0/24    !192.168.122.0/24    
POSTROUTING_direct  all  --  0.0.0.0/0            0.0.0.0/0           
POSTROUTING_ZONES_SOURCE  all  --  0.0.0.0/0            0.0.0.0/0           
POSTROUTING_ZONES  all  --  0.0.0.0/0            0.0.0.0/0           
MASQUERADE  all  --  192.168.1.0/24       0.0.0.0/0           

Chain OUTPUT_direct (1 references)
target     prot opt source               destination         

Chain POSTROUTING_ZONES (1 references)
target     prot opt source               destination         
POST_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
POST_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
POST_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
POST_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
POST_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 

Chain POSTROUTING_ZONES_SOURCE (1 references)
target     prot opt source               destination         

Chain POSTROUTING_direct (1 references)
target     prot opt source               destination         

Chain POST_FedoraWorkstation (5 references)
target     prot opt source               destination         
POST_FedoraWorkstation_log  all  --  0.0.0.0/0            0.0.0.0/0           
POST_FedoraWorkstation_deny  all  --  0.0.0.0/0            0.0.0.0/0           
POST_FedoraWorkstation_allow  all  --  0.0.0.0/0            0.0.0.0/0           

Chain POST_FedoraWorkstation_allow (1 references)
target     prot opt source               destination         

Chain POST_FedoraWorkstation_deny (1 references)
target     prot opt source               destination         

Chain POST_FedoraWorkstation_log (1 references)
target     prot opt source               destination         

Chain PREROUTING_ZONES (1 references)
target     prot opt source               destination         
PRE_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
PRE_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
PRE_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
PRE_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 
PRE_FedoraWorkstation  all  --  0.0.0.0/0            0.0.0.0/0           [goto] 

Chain PREROUTING_ZONES_SOURCE (1 references)
target     prot opt source               destination         

Chain PREROUTING_direct (1 references)
target     prot opt source               destination         

Chain PRE_FedoraWorkstation (5 references)
target     prot opt source               destination         
PRE_FedoraWorkstation_log  all  --  0.0.0.0/0            0.0.0.0/0           
PRE_FedoraWorkstation_deny  all  --  0.0.0.0/0            0.0.0.0/0           
PRE_FedoraWorkstation_allow  all  --  0.0.0.0/0            0.0.0.0/0           

Chain PRE_FedoraWorkstation_allow (1 references)
target     prot opt source               destination         

Chain PRE_FedoraWorkstation_deny (1 references)
target     prot opt source               destination         

Chain PRE_FedoraWorkstation_log (1 references)
target     prot opt source               destination

This does not look like a DNS problem as much as a routing problem. Are you able to get to the wider Internet from your Linaro device ? My guess is that your router (ie the adsl modem or equivalent - not the Fedora box) does not know how to reach the 10.128.231.0/25 network - Either that or you need to bridge the Interfaces on your Fedora box rather then route them. — davidgo, Commented Jun 30, 2015 at 7:31
@davigo, yeah, I just don't know what the way to bridge an ethernet NIC to a wireless NIC. I looked at brctl, but wireless doesn't play nice. — Ivan, Commented Jun 30, 2015 at 16:43
@Marius, even if I try to ping an ip address from the dhcp client that I can ping from the laptop it doesn't work. So pinging 8.8.8.8 won't work either. — Ivan, Commented Jun 30, 2015 at 16:44
I installed parprouted on Fedora and said sudo parprouted enp1s0 wlp2s0, but I still cannot ping an ip address from the dhcplient. — Ivan, Commented Jun 30, 2015 at 17:01

meuh · Accepted Answer · 2015-07-01 13:37:23Z

2

Replace

domain-name-servers      192.168.1.1;

by the address of the dns server used by the laptop, or configure a dns cache server on your laptop. Use commands like nslookup or host to test the dns access on the client.

You need to enable masquerading on the laptop with iptables:

iptables -t nat -I POSTROUTING -s 192.168.1.0/24 -o <wifi_interface> -j MASQUERADE

Perhaps you already have some iptables configuration in use (this is not my strong point). Try setting the default policy for the nat table with

iptables -t nat -P PREROUTING ACCEPT
iptables -t nat -P POSTROUTING ACCEPT
iptables -t nat -P OUTPUT ACCEPT

Note you can always see what packets are passing on an interface using

sudo tcpdump -i <name_of_interface>

If you do this on both interfaces at once you can see where a packet is lost or rejected by the laptop.

You may have a service which has already configured iptables, eg firewalld on fedora. It's best to try and use its configuration tool to make any changes. For example,

firewall-cmd --add-masquerade

but you also need to setup an internal or trusted zone for your ethernet network (sorry, I dont know anything more about this).

edited Jul 1, 2015 at 13:37

answered Jun 30, 2015 at 14:54

meuh

6,4541 gold badge21 silver badges26 bronze badges

Even if I try to ping an ip address from the dhcp client that I can ping from the laptop it doesn't work.
– Ivan
Commented Jun 30, 2015 at 16:42
@meuth, much closer!!!! I am able to ping ips, but dns is not working (I have not changed the domain-name-servers as you state above yet because I don't know how to find out) However, I think it is downhill from here. Thanks!
– Ivan
Commented Jun 30, 2015 at 17:33
I changed the configuration of the dhcpd.conf to add the nameservers that my laptop uses when it connects to the wifi. I can see them in /etc/resolv.conf on the dhcp client. However, I can't ping www.yahoo.com but I can ping the nameservers themselves! Maybe DNS needs a similar iptables entry?
– Ivan
Commented Jun 30, 2015 at 17:50
Found this answer here arstechnica.com/civis/viewtopic.php?f=10&t=1242667 , not sure how to do this to my setup: iptables -A FORWARD -i eth2 -o eth0 -j ACCEPT iptables -A FORWARD -i eth0 -o eth2 -m state --state RELATED,ESTABLISHED -j ACCEPT
– Ivan
Commented Jun 30, 2015 at 18:10
1

meuh, the firewalld-cmd command did it! I have a mess that I need to clean up apparently with my iptables & firewalld. Thanks!!!
– Ivan
Commented Jul 1, 2015 at 14:46

| Show 4 more comments

Lungten · Accepted Answer · 2015-06-30 05:07:34Z

0

Your DHCP configuration looks fine. It might be that you do not have a DNS resolver at 192.168.1.1 or it doesn't run dnsmasq service. What sort of device is your gateway?

answered Jun 30, 2015 at 5:07

Lungten

312 bronze badges

Even if I try to ping an ip address from the dhcp client that I can ping from the laptop it doesn't work
– Ivan
Commented Jun 30, 2015 at 16:42

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