R: Too many connections on the same IP

Hello Stefan, and thank you for the reply. Are you using iptables Firewall? Does the problem only occur on UDP connections to the problematic IP? Or also on TCP connections to the same IP? At the beginning, i thought was an iptables-behind-firewall problem and i made massive dns resolutions

R: Too many connections on the same IP

I tried to tune kernel, with SOMAXCONN but with no solutions! When DNS queries raise up over 300 queries per second, bind has huge timeouts and often does not respond. If i work on an ip alias, everything is right! it seems bind has some limit based on local ip address. is there any solutions?

Re: R: Too many connections on the same IP

Have you checked to see if there is another machine using the same IP? On Mar 3, 2015, at 4:40 PM, Job j...@colliniconsulting.it wrote: I tried to tune kernel, with SOMAXCONN but with no solutions! When DNS queries raise up over 300 queries per second, bind has huge timeouts and often does