I installed KVM in ubuntu 16.04 and made a CentOS 6.8 VM on it using Virtual Machine Manager. In the network settings, I assigned bridged mode to my VM. After successful installation I assigned a static IP to CentOS. But I was unable to get the networking to work. I was unable to ping the default gateway. Moreover on my host machine ubuntu 16.04, the networking seemed to have stopped and I was unable to ping the default gateway from there as well, leaving me with the following message
ping: sendmsg: No buffer space available
After I changed the VM settings from bridged mode to NAT, I was able to ping gateway from ubuntu and the network was working fine. Can someone please explain why was I unable to ping in bridged mode, both from VM and my host?