ForwardX11Trusted yes

Match exec "ping -q -c 1 -t 1 %n | grep '128\.239\.56\.'"
   StrictHostKeyChecking no
   UserKnownHostsFile=/dev/null

Match exec "ping -q -c 1 -t 1 %n | grep '128\.239\.57\.'"
   StrictHostKeyChecking no
   UserKnownHostsFile=/dev/null

Match exec "ping -q -c 1 -t 1 %n | grep '128\.239\.58\.'"
   StrictHostKeyChecking no
   UserKnownHostsFile=/dev/null

Match exec "ping -q -c 1 -t 1 %n | grep '128\.239\.59\.'"
   StrictHostKeyChecking no
   UserKnownHostsFile=/dev/null

Match exec "ping -q -c 1 -t 1 %n | grep '192\.168\.56\.'"
   StrictHostKeyChecking no
   UserKnownHostsFile=/dev/null

Match exec "ping -q -c 1 -t 1 %n | grep '192\.168\.57\.'"
   StrictHostKeyChecking no
   UserKnownHostsFile=/dev/null

Match exec "ping -q -c 1 -t 1 %n | grep '192\.168\.58\.'"
   StrictHostKeyChecking no
   UserKnownHostsFile=/dev/null

Match exec "ping -q -c 1 -t 1 %n | grep '192\.168\.59\.'"
   StrictHostKeyChecking no
   UserKnownHostsFile=/dev/null