Cannot ping machine on ethernet while having two interfaces active (Ethernet and Wifi)

Question

As the title says I cannot do it.

My computer is connected to the WiFi for internet, and to the Ethernet to LAN communication with the other computer. I have setup the Ethernet connection ipv4 routes to use this connection only for resources on its network , and also the IPv4 forward = 1.

The default connection is on WiFi, both connections are active. Default connection is WiFi.

When I disconnect from WiFi I can ping on the other machine over ethernet. When I am connected to both I cannot ping on the machine over the ethernet.

I don't know how to solve this, can someone help me?

my route -n output is (eno1 ethernet, slp58s0 WiFi)

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.43.1    0.0.0.0         UG    600    0        0 wlp58s0
10.68.0.0       0.0.0.0         255.255.255.0   U     100    0        0 eno1
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eno1
192.168.43.0    0.0.0.0         255.255.255.0   U     600    0        0 wlp58s0

score 1 · Accepted Answer · answered Aug 12 '20 at 11:40

1

Are you ping-ing using hostname or IP? Could be your hostname is not resolved when WiFi is enabled.

answered Aug 12 '20 at 11:40

Joakim B Petersen

26

thank you, the hostname was actually not resolved. I added it manually to /etc/hosts – jdios Aug 12 '20 at 11:48
Awesome. Happy that it worked for you :-) – Joakim B Petersen Aug 12 '20 at 13:32

Cannot ping machine on ethernet while having two interfaces active (Ethernet and Wifi)

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