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I have HP laptop with an external wifi Adapter as there is no Wifi adapter inbuild.

This is my ifconfig result

docker0   Link encap:Ethernet  HWaddr 02:42:fc:cf:ad:7c  
          inet addr:172.17.0.1  Bcast:172.17.255.255  Mask:255.255.0.0
          UP BROADCAST MULTICAST  MTU:1500  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:0 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

eno1      Link encap:Ethernet  HWaddr 10:e7:c6:7c:81:c3  
          UP BROADCAST MULTICAST  MTU:1500  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)

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:6880 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6880 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:580042 (580.0 KB)  TX bytes:580042 (580.0 KB)

virbr0    Link encap:Ethernet  HWaddr 00:00:00:00:00:00  
          inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
          UP BROADCAST MULTICAST  MTU:1500  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)

wlx502b73e86298 Link encap:Ethernet  HWaddr 50:2b:73:e8:62:98  
          inet addr:192.168.43.254  Bcast:192.168.43.255  Mask:255.255.255.0
          inet6 addr: fe80::a85:c587:3653:359/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:53032 errors:0 dropped:0 overruns:0 frame:0
          TX packets:45991 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:42520401 (42.5 MB)  TX bytes:6912557 (6.9 MB)

I take my IP is 192.168.43.254 and wifi adapter is wlx502b73e86298

Now when I connect to another WIFI, my IP changes to

192.168.0.106

Can I keep some static IP lets say 192.168.0.10 and no matter whichever WIFI I am connected it should work fine?

I have tried following configuration in 

 sudo nano /etc/network/interfaces



auto wlx502b73e86298
iface wlx502b73e86298 inet static
    address 192.168.0.10
    netmask 255.255.255.0
    gateway 192.168.0.1

dns-nameservers 8.8.4.4 8.8.8.8

And than run these commands

sudo ip addr flush wlx502b73e86298

 sudo systemctl restart networking.service

Now if I do ifconfig I can see my IP as 192.168.0.10

but ping google.com doesn't work and I cant access the internet.

Why I need a static IP is because I have a few containers running in Docker and all are pointing to Host IP. If Host IP changes I have to change IP in each container.

MyTwoCents
  • 101

1 Answers1

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Use your localhost? 127.0.0.1.

You will need to bind your docker containers to localhost using something like "docker run -d -p 127.0.0.1:80:5000 base/theApp python theApp.py".

If this isn't an option you can use, you got two options.

The best solution is to bind your mac-address to your ip in all the dhcp-servers.

If you don't have access to the dhcp-server config you need to use a dhcp (dynamic setup) and an sub-interface with a static ip. Just remember to validate this with your network owner, otherwise it can cause network duplicate address errors. There is already a thread on this here askubuntu.com

Just add interface:[interface no] to add another interface configuration.

Example:

auto lo eth0 eth0:0 iface lo inet loopback

iface eth0 inet dhcp

iface eth0:0 inet static address ... netmask ...

Rickard Zachrisson
  • 11