On Sunday, 17 June 2018 18:42:53 BST Ralph Corderoy wrote: > If you're on the Pi trying to ping 8.8.8.8 with eth0 plugged in, giving > the winning metric-202 default route, then your packet is going to > travel out of eth0 addressed to outdoor-wap's 192.168.0.1-interface's > Ethernet address. That seems the first odd thing to investigate.
I spent most of yesterday afternoon grappling with this. At first, because the problem was related to routes, I assumed that I had introduced the problem when I set up the routing using IP Tables. It took me a while to discover how to delete and / or flush rules from the IP Tables (because simply deleting the file contain the rules didn't change anything). Then it dawned on me that if deleting all of the routes and rebooting didn't solved the problem, then it probably wasn't iptables that was causing it. I then stumbled across a 6-year old page (http://qcktech.blogspot.com/) that discussed how to set up a wired router on a Raspberry Pi. The problem being solved was identical (eg AP connected to the RPi's Router port and the other side connected to the ISP's ADSL Router). Unfortunately this method set up the static IP address using /etc/Network/ interfaces, which in the modern versions of Raspbian contains a message to use dhcpcd.conf instead. Nonetheless I gave it a try and achieved connectivity from the Pi (browser and ping) to the Internet, but not from the AP to the RPi. In the Pi's desktop, the Network icon displays 'Connection to DHCP lost' and no interfaces when hovered over. Here is the config I'm using: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback #USB NIC connecting to the Internet auto eth1 iface eth1 inet dhcp #Onboard NIC serving as internal gateway auto eth0 iface eth0 inet static address 192.168.0.9 netmask 255.255.255.0 network 192.168.0.0 broadcast 192.168.0.255 gateway 192.168.0.9 I tried setting the gateway address to the AP instead of the RPi, but to no avail. I also took out the static address entries for eth0 from dhcpcd.conf, but also without luck. I then studied the man page for dhcpcd.conf, but was unable to see how to exactly replicate the settings in 'interfaces'. It seems to me that the problem might be that I'm conflicting the settings that dhcpcd.conf is adding with those from interfaces, but I can't see where or how to stop it. I'm off to WMT shortly and won't get back onto this until this afternoon. My biggest problem is that most sites that explain how to set up an RPi as a wired Router seem to be old (at least I couldn't find any newer ones). That is why I adapted the instructions from the original site to develop my first attempt. These were in a link from the NoDogSplash instructions at https://pimylifeup.com/raspberry-pi-wireless-access-point/. -- Terry Coles -- Next meeting: Bournemouth, Tuesday, 2018-07-03 20:00 Meets, Mailing list, IRC, LinkedIn, ... http://dorset.lug.org.uk/ New thread: mailto:dorset@mailman.lug.org.uk / CHECK IF YOU'RE REPLYING Reporting bugs well: http://goo.gl/4Xue / TO THE LIST OR THE AUTHOR
