My wifi to my EmonPi has always been patchy, and sometimes instead of getting the correct IP (192.168.1.222, which is assigned by the dd-wrt router), it gets a different IP from the DHCP pool (e.g. 192.168.1.100). It doesn’t come up in the list on the router (Status>LAN or Status>Wireless).
So to overcome the patchy wifi into the meter box, I just installed powerline adapters and am now connecting over the LAN/eth0 port, and I’m getting the exact same thing. I’ve got the MAC address listed in the dd-wrt router to assign 192.168.1.222 to the eth0 port (and .223 to the wifi), but for some reason it keeps getting 192.168.1.109 on eth0.
I tried setting the wlan IP statically, but emoncms didn’t load properly (I can’t remember the exact error message).
/etc/network/interfaces looks like this:
# 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
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
allow-hotplug wlan0
iface wlan0 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
iface wlan0 inet dhcp
# GSM 3G Hi_Link USB modem
allow-hotplug eth1
iface eth1 inet dhcp
ifconfig -a looks like this:
eth0 Link encap:Ethernet HWaddr b8:27:eb:55:70:1e
inet addr:192.168.1.109 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::ba27:ebff:fe55:701e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8625 errors:0 dropped:0 overruns:0 frame:0
TX packets:2039 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:608923 (594.6 KiB) TX bytes:495945 (484.3 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:209442 errors:0 dropped:0 overruns:0 frame:0
TX packets:209442 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:96972068 (92.4 MiB) TX bytes:96972068 (92.4 MiB)
wlan0 Link encap:Ethernet HWaddr b8:27:eb:00:25:4b
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::79c:8bce:5d2:f4b3/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:425 errors:0 dropped:0 overruns:0 frame:0
TX packets:42 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:56993 (55.6 KiB) TX bytes:9820 (9.5 KiB)'
DHCP assignments on my dd-wrt router look like this:
Oh, and everything else on my network obeys the DHCP assignments, it’s just the emonpi that plays up.