Can't ping devices on LAN
I’ve got 2 Access Points attached to my laptop’s ethernet port via a PoE switch. I’ve assigned static IPs & names to them with
dnxmasq (successfully, I believe). However, ping and ssh say they’re unreachable. So what have I missed, and how can I successfully
More info: The dnsmasq logs confirm that the DHCP transaction was successful, and my APs should now be
10.0.0.11, on an infinite lease. My laptop’s ethernet interface
enp0s31f6 is on
10.0.0.0, and I can
ping 10.0.0.0, even without dnsmasq running.
(Stack-wise, I’m using systemd, wayland, sway (started from console, no logind / display manager).
iwd for wireless (so no NetworkManager). I’m listing these in case there’s some GDM/Gnome/NM magic that would set up interfaces better or something)
My main theory is that something I haven’t done with either
dnsmasq somehow "enables routing".
To start the system running, I do (as root):
# ip link set enp0s31f6 up # ip addr add 10.0.0.0/16 dev enp0s31f6 # systemctl start dnsmasq.service
Here’s the machine that doesn’t go "ping":
$ ping 10.0.0.10 PING 10.0.0.10 (10.0.0.10) 56(84) bytes of data. From 10.0.0.0 icmp_seq=1 Destination Host Unreachable From 10.0.0.0 icmp_seq=2 Destination Host Unreachable From 10.0.0.0 icmp_seq=3 Destination Host Unreachable [...]
On the plus side it appears to know that pings to this IP need to come from the ethernet interface’s IP. Worth adding that iwd / wifi networking works fine and I can ping hosts on the internet.
I haven’t used
ip route to set anything manually, but it looks like it does the right thing(?):
$ ip route | grep 10.0 10.0.0.0/16 dev enp0s31f6 proto kernel scope link src 10.0.0.0
ip address confirms that I’ve added the 10.* subnet (if that’s the right term). I’ve snipped the output here to show only the relevant interface:
$ ip addr ... 2: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether e8:6a:64:1f:02:64 brd ff:ff:ff:ff:ff:ff inet 10.0.0.0/16 scope global enp0s31f6 valid_lft forever preferred_lft forever inet6 fe80::ea6a:64ff:fe1f:264/64 scope link proto kernel_ll valid_lft forever preferred_lft forever ...
interface=enp0s31f6 dhcp-authoritative bind-interfaces # Static IPs: (mac, name, IP, lease-time) dhcp-host=e8:6a:64:1f:02:64,host,10.0.0.0,infinite dhcp-host=78:8a:20:06:b1:b0,ap1,10.0.0.10,infinite dhcp-host=18:e8:29:47:66:a4,ap2,10.0.0.11,infinite # Dynamic range of IPs to supply: dhcp-range=10.0.1.0,10.0.100.255,255.255.0.0,5m # TODO change 5m @@ ## Probably-irrelevant DNS stuff: # Set gateway / probably only for internet forwarding dhcp-option=3,10.0.0.0 # Set DNS servers to announce / ? dhcp-option=6,10.0.0.0
In your config you set IP address wrongly:
ip add addr 10.0.0.0/16
10.0.0.0 is the address of network, the first usable address is
Also you should check below you use the same address as gateway and DNS (in DHCP config)