Alain Kelder is a Giant Dork

Shell one liner to convert DHCP reservation values from Vyatta config into a Bind zone file format

DHCP reservations in the Vyatta config.boot are in the following format:

   ---------------8<---------------
       static-mapping HOST1 {
           ip-address 192.168.1.91
           mac-address aa:12:34:45:67:89
       }
       static-mapping HOST2 {
           ip-address 192.168.1.92
           mac-address bb:12:34:45:67:89
       }
       static-mapping HOST3 {
           ip-address 192.168.1.93
           mac-address cc:12:34:45:67:89
   ---------------8<---------------

The following shell one line script will convert the above into a format suitable for inclusion in a Bind DNS zone file:

$ grep -A1 static-mapping config.boot | awk '{print$2}' | tr "\n" " " | sed 's/\([0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\)/\1\n/g' | awk '{print$2 "\t" $1}'
192.168.1.91    HOST1
192.168.1.92    HOST2
192.168.1.93    HOST3