Hi Arix,
You can try the below command from the shell
start shell user root
echo IP1 IP2 IP3 | xargs -n1 -P0 ping -c 4
Works for me
# echo 8.8.8.8 4.4.4.4 5.5.5.5 | xargs -n1 -P0 ping -c 4
PING 4.4.4.4 (4.4.4.4): 56 data bytes
PING 8.8.8.8 (8.8.8.8): 56 data bytes
PING 5.5.5.5 (5.5.5.5): 56 data bytes
64 bytes from 8.8.8.8: icmp_seq=0 ttl=45 time=11.046 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=45 time=11.153 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=45 time=11.189 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=45 time=10.950 ms
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max/stddev = 10.950/11.084/11.189/0.094 ms
--- 5.5.5.5 ping statistics ---
4 packets transmitted, 0 packets received, 100% packet loss
--- 4.4.4.4 ping statistics ---
4 packets transmitted, 0 packets received, 100% packet loss
BR,
Vishal
PS: Please accept my response as solution if it answers you query, kudos are appreciated too!