On Thu, May 16, 2019 at 12:18:53PM +0300, kasak wrote: > Hello! I have a litle problem with my unbound: > > unbound: notice: sendto failed: No buffer space available > > I think, I should increase net.inet.udp.sendspace, but I don't really > understand what size do i need. > > Is there any information about calculating needed buffer space?
It is probably not net.inet.udp.sendspace since that value only affects how big a packet you can send per UDP. The send buffer is only used to move the packet to the kernel and is empty after every send. Please check a) if there are any failures to allocate mbufs (netstat -m and vmstat -m) and b) interface errors (netstat -i) -- :wq Claudio
