Created
October 22, 2018 15:41
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| @include "lib_netaddr.awk" | |
| function sanitize(ip) { | |
| split(ip, slice, ".") | |
| return slice[1]/1 "." slice[2]/1 "." slice[3]/1 "." slice[4]/1 | |
| } | |
| function snbounds(to,i) { | |
| sn_min=grp[1] | |
| sn_max=grp[to] | |
| for(sn_mask=32; sn_mask && sn_min != sn_max; sn_mask--) { | |
| sn_min = rshift(sn_min,1) | |
| sn_max = rshift(sn_max,1) | |
| } | |
| for(i=32; i>sn_mask; i--) { | |
| sn_min = lshift(sn_min,1) | |
| sn_max = lshift(sn_max,1) + 1 | |
| } | |
| } | |
| function grpstd(val, tot, cnt, mean, sqtot) { | |
| cnt = length(grp) | |
| snbounds(cnt) | |
| tot = sn_min + sn_max | |
| cnt += 2 | |
| for(val in grp) tot=tot + grp[val] | |
| mean = tot / cnt | |
| sqtot = (sn_min - mean) * (sn_min - mean) + \ | |
| (sn_max - mean) * (sn_max - mean) | |
| for(val in grp) { | |
| sqtot = sqtot + (grp[val] - mean) * (grp[val] - mean) | |
| } | |
| return sqrt(sqtot / cnt) | |
| } | |
| BEGIN { limit=1000 } | |
| { k[NR]=ip2dec(sanitize($1)) } | |
| END { | |
| n=asort(k) | |
| print "/ip firewall address-list" | |
| for(idx=1; idx <= n ; idx++) { | |
| grp[++have]=k[idx] | |
| # print dec2ip(grp[have]) " std: " grpstd() | |
| if(grpstd() > limit) { | |
| snbounds(length(grp)-1) | |
| #print "\nSubnet from " dec2ip(grp[1]) " to " dec2ip(grp[have-1]) " " have - 1 " IP(s)" | |
| print "add address=" dec2ip(sn_min) "/" sn_mask " list=rkn" | |
| have=split(grp[have], grp) | |
| } | |
| } | |
| if (have) { | |
| snbounds(length(grp)) | |
| #print "\nSubnet from " dec2ip(grp[1]) " to " dec2ip(grp[have]) " " have " IP(s)" | |
| print "add address=" dec2ip(sn_min) "/" sn_mask " list=rkn" | |
| } | |
| } |
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