fix log dhcp path for isc-dhcpd

docs/dhcpd/dhcp-hook.sh

@@ -2,6 +2,6 @@
 
 time=$(date +%s)
 #TYPE;MAC;IP;HOSTNAME
-echo "$1;$3;$2;$4;${time}" >>/var/spool/dhcp-log.socket &
+echo "$1;$3;$2;$4;${time}" >>/var/log/dhcp.log &
 
 exit