I can only ping a computer after the other computer pinged me before
6604
Cannot ping over LAN until a ping is received
137223
A network-related or instance-specific error occurred
24549
Wget and curl can work normally, but ping fails
116005
Displaying time and date next to part of the ping output
35816
Multiple servers acting like a single one with all the hardware?
116306
Reset a network connection by name?
93375
Windows losing IPv6 address after ~10 minutes
41869
SSH is allowing remote connections only after a local login to the server
81500
Computer can't resolve other computer names
30232
Ping IP returned "destination net unreachable", even with different network
46464
How can I trick Minecraft into thinking two computers are on the same wifi network?
76856
Using "users" command gets my name 2 times?
126462
Another device is using your IP address mac, what do I change my IP address too?
37588
How can I control two computers with the same keyboard and mouse?
16155
Pinging an IP address using PHP and echoing the result
31457
How do I use capsh: I am trying to run an unprivileged ping, with minimal capabilities
114446
how to chat between 2 ubuntu machines in network?