IGMP Snooping Ubiquiti Unifi

Recently I had some legacy hardware applications that required a multicast heartbeat back to clients on the same wifi network. These were specialized tools from GM that technicians used to connect to vehicles for diagnostics back to GM. GM calls them the MDI (Multiple Diagnostic Interface).   I had a problem using Ubiquiti Unifi controller […]

XenServer 6.1 Ubuntu Paravirtualized Will Not Boot After Kernel Upgrade

If you are running Ubuntu on XenServer, you are probably aware that you are running this thing with the paravirtualized modified kernel. Yesterday I ran into this issue where the kernel update caused the server not to boot any more. Upon logging into the XenServer, i got this error: Error: Starting VM – Using to […]