I followed this tutorial about making a wifi hotspot with a RPi 3 successfully. I can connect to the hotspot and have internet access on my devices, but I don't have internet access on my raspberry pi anymore via ethernet!
I can still ssh on it and ping to 220.127.116.11, but not to domain names like www.google.com
How can I set up a wireless hotspot while maintaining internet connection on the pi through ethernet? Is this even possible?
EDIT: here is the output of the commands I was asked to reproduce in the comments.
pi@raspberrypi:~ $ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.1.1 0.0.0.0 UG 202 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 303 0 0 wlan0 192.168.1.0 0.0.0.0 255.255.255.0 U 202 0 0 eth0 192.168.42.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0
pi@raspberrypi:~ $ cat /etc/resolv.conf
# Generated by resolvconf
pi@raspberrypi:~ $ sudo iptables -L
Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT all -- anywhere anywhere Chain OUTPUT (policy ACCEPT) target prot opt source destination
pi@raspberrypi:~ $ sudo iptables -t nat -L
Chain PREROUTING (policy ACCEPT) target prot opt source destination Chain INPUT (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain POSTROUTING (policy ACCEPT) target prot opt source destination MASQUERADE all -- anywhere anywhere
EDIT2: Output of /etc/network/interfaces and /etc/dhcpcd.conf
I have configured a static ip on the wlan0 in the interfaces file as per the tutorial, and a static ip on eth0 in the dhcpcd.conf (because it didn't worked on the interfaces file for ethernet).
pi@raspberrypi:~ $ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8) # Please note that this file is written to be used with dhcpcd # For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf' # Include files from /etc/network/interfaces.d: source-directory /etc/network/interfaces.d auto lo iface lo inet loopback iface eth0 inet dhcp allow-hotplug wlan0 iface wlan0 inet static address 192.168.42.1 netmask 255.255.255.0 # wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf #allow-hotplug wlan1 #iface wlan1 inet manual # wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
pi@raspberrypi:~ $ cat /etc/dhcpcd.conf
# A sample configuration for dhcpcd. # See dhcpcd.conf(5) for details. # Allow users of this group to interact with dhcpcd via the control socket. #controlgroup wheel # Inform the DHCP server of our hostname for DDNS. hostname # Use the hardware address of the interface for the Client ID. clientid # or # Use the same DUID + IAID as set in DHCPv6 for DHCPv4 ClientID as per RFC4361. #duid # Persist interface configuration when dhcpcd exits. persistent # Rapid commit support. # Safe to enable by default because it requires the equivalent option set # on the server to actually work. option rapid_commit # A list of options to request from the DHCP server. option domain_name_servers, domain_name, domain_search, host_name option classless_static_routes # Most distributions have NTP support. option ntp_servers # Respect the network MTU. # Some interface drivers reset when changing the MTU so disabled by default. #option interface_mtu # A ServerID is required by RFC2131. require dhcp_server_identifier # Generate Stable Private IPv6 Addresses instead of hardware based ones slaac private # A hook script is provided to lookup the hostname if not set by the DHCP # server, but it should not be run by default. nohook lookup-hostname interface eth0 static ip_address=192.168.1.144/24 static routers=192.168.1.1 static domain_name_server=18.104.22.168
EDIT3: It appears that the problem is that the file /etc/resolv.conf clears itself some seconds after editing it, but I don't know what is overwriting or regenerating it...