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base-files: ipcalc.sh: don't include own address in range

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Make sure our own address doesn't lie in the calculated range.

Signed-off-by: Leon M. George <leon@georgemail.eu>
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Leon M. George 2022-05-05 23:47:47 +02:00 committed by Christian Marangi
parent 00a20335ba
commit 4fe106afd1
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1 changed files with 7 additions and 0 deletions
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package/base-files/files/bin/ipcalc.sh
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@ -61,10 +61,17 @@ BEGIN {
start=or(network,and(ip2int(ARGV[3]),compl32(netmask)))
limit=network+1
if (start<limit) start=limit
if (start==ipaddr) start=ipaddr+1
end=start+ARGV[4]
limit=or(network,compl32(netmask))-1
if (end>limit) end=limit
if (end==ipaddr) end=ipaddr-1
if (ipaddr > start && ipaddr < end) {
print "ipaddr inside range" > "/dev/stderr"
exit(1)
}
print "START="int2ip(start)
print "END="int2ip(end)