My Wifi to NIC config blues:

Notice the 10.42.43.1 IP setting in the ifconfig and notice the setting called for is 192.168.3.x.  Happy that the Auto eth0 is always coming up now, but it is still not serving IPs to the network and totally confused by where is is getting the 10.42.43.1 address and have not found this searching my system.

Contents of the DHCP config file /etc/dhcp3/dhcpd.conf

# /etc/dhcp3/dhpcd.conf

default-lease-time 600;
max-lease-time 7200;
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.3.255;
option routers 192.168.3.2;
option domain-name-servers 192.168.3.1, 4.2.2.2;
option domain-name "tc-noc-server";
log-facility local7;
subnet 192.168.3.0 netmask 255.255.255.0 { range 192.168.3.10 192.168.3.200;}


#subnet 10.42.43.0 netmask 255.255.255.0 {
#range 10.42.43.100 192.168.1.200;
#}

Contents of the NetWork config file /etc/network/interfaces

auto lo
iface lo inet loopback
auto eth0
auto wlan0

#iface eth0 inet static
#address 192.168.3.2
#gateway 192.168.3.1
#netmask 255.255.255.0
#network 192.168.3.0
#broadcast 192.168.3.255



Contents of the DHCP resolv file /etc/dhcpc/resolv.conf

cat: /etc/dhcpc/resolv.conf: No such file or directory

Contents of the Net Mgr file /etc/NetworkManager/nm-system-settings.conf

# This file is installed into /etc/NetworkManager, and is loaded by
# NetworkManager by default.  To override, specify: '--config file'
# during NM startup.  This can be done by appending to DAEMON_OPTS in
# the file:
#
# /etc/default/NetworkManager
#

[main]
plugins=ifupdown,keyfile

no-auto-default=00:07:e9:3d:c3:e8,

[ifupdown]
managed=false


Contents of the NM Auto eth0 file /etc/NetworkManager/system-connections/Auto eth0


[connection]
id=Auto eth0
uuid=c30dad40-9e6f-487e-a99f-aba2c3a6855a
type=802-3-ethernet
autoconnect=true
timestamp=0

[ipv4]
method=shared
ignore-auto-routes=false
ignore-auto-dns=false
dhcp-send-hostname=true
never-default=true

[802-3-ethernet]
speed=0
duplex=full
auto-negotiate=true
mac-address=0:7:e9:3d:c3:e8
mtu=0

[ipv6]
method=ignore
ignore-auto-routes=false
ignore-auto-dns=false
never-default=false

Snap shot of the network settings from ifconfig

eth0      Link encap:Ethernet  HWaddr 00:07:e9:3d:c3:e8
          inet addr:10.42.43.1  Bcast:10.42.43.255  Mask:255.255.255.0
          inet6 addr: fe80::207:e9ff:fe3d:c3e8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:9455 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6813 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1564285 (1.5 MB)  TX bytes:1141629 (1.1 MB)

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:16436  Metric:1
          RX packets:88687 errors:0 dropped:0 overruns:0 frame:0
          TX packets:88687 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:8470578 (8.4 MB)  TX bytes:8470578 (8.4 MB)

wlan0     Link encap:Ethernet  HWaddr 00:0f:3d:ad:c3:c8
          inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::20f:3dff:fead:c3c8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:25273 errors:0 dropped:0 overruns:0 frame:0
          TX packets:28474 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:21215894 (21.2 MB)  TX bytes:5391700 (5.3 MB)

wmaster0  Link encap:UNSPEC  HWaddr 00-0F-3D-AD-C3-C8-61-64-00-00-00-00-00-00-00-00
          UP RUNNING  MTU:0  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)