final commit of jun-19

docs/networking/Cannot-ping-VM-on-3Engines-Cloud.html.md

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+Cannot ping VM on 3Engines Cloud[🔗](#cannot-ping-vm-on-brand-name "Permalink to this headline")
+=================================================================================================
+
+If you have problems with access to your VM - ping is not responding. Try the following:
+
+install the packages **net-tools** (to have the **ifconfig** command) and **arping**:
+
+in CentOS:
+
+```
+sudo yum install net-tools arping
+
+```
+
+in Ubuntu:
+
+```
+sudo apt install net-tools arping
+
+```
+
+check the name of the interface connected to private network:
+
+```
+ifconfig
+
+```
+
+based on the response, find the number of the interface of 192.168.x.x (eth<number> or ens<number>)
+
+after that invoke the following commands:
+
+in CentOS:
+
+```
+sudo arping -U -c 2 -I eth<number> $(ip -4 a show dev eth<number> | sed -n 's/.*inet \([0-9\.]\+\).*/\1/p')
+
+```
+
+in Ubuntu:
+
+```
+sudo arping -U -c 2 -I ens<number> $(ip -4 a show dev ens<number> | sed -n 's/.*inet \([0-9\.]\+\).*/\1/p')
+
+```
+
+Next ping your external ip address and check if it helped.