I had this same issue aswell. In my case, I was messing around with IPTABLES on the host that was running splunk, and by flushing and resetting iptables I ruined the network connection.    If you run splunk through docker, this fix is very easy. You can just restart docker (sudo systemctl restart docker) and it should reconfigure automatically.   I didn't dive into doing this bare metal, but I hope this points someone in the right direction! ... View more