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| author | Leon M. Busch-George <leon@georgemail.eu> | 2023-06-16 14:58:48 +0200 |
|---|---|---|
| committer | Leon M. Busch-George <leon@georgemail.eu> | 2023-09-25 15:02:49 +0200 |
| commit | 59e681eea1fbf969ff6f2da315f18142b70424bd (patch) | |
| tree | af993b5520ec23f4037aa3cbac9cccb3abb13650 /package | |
| parent | 9b2f8a33b6b247d4232d48a1d18aea3769590083 (diff) | |
| download | upstream-59e681eea1fbf969ff6f2da315f18142b70424bd.tar.gz upstream-59e681eea1fbf969ff6f2da315f18142b70424bd.tar.bz2 upstream-59e681eea1fbf969ff6f2da315f18142b70424bd.zip | |
base-files: ipcalc.sh: don't print broadcast addr for prefix > 30
Printing a broadcast address doesn't make any sense for /31 and /32
prefixes.
Strictly speaking, the same goes for the network address but it is useful
to get the first address in the prefix, e.g. to create a canonical
CIDR notation "$NETWORK/$PREFIX".
Signed-off-by: Leon M. Busch-George <leon@georgemail.eu>
Diffstat (limited to 'package')
| -rwxr-xr-x | package/base-files/files/bin/ipcalc.sh | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/package/base-files/files/bin/ipcalc.sh b/package/base-files/files/bin/ipcalc.sh index c852b5163f4..ffcdfc02d8b 100755 --- a/package/base-files/files/bin/ipcalc.sh +++ b/package/base-files/files/bin/ipcalc.sh @@ -50,12 +50,14 @@ BEGIN { network=and(ipaddr,netmask) prefix=32-bitcount(compl32(netmask)) - broadcast=or(network,compl32(netmask)) print "IP="int2ip(ipaddr) print "NETMASK="int2ip(netmask) - print "BROADCAST="int2ip(broadcast) print "NETWORK="int2ip(network) + if (prefix<=30) { + broadcast=or(network,compl32(netmask)) + print "BROADCAST="int2ip(broadcast) + } print "PREFIX="prefix # range calculations: |