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https://issues.apache.org/jira/browse/NET-624?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebb updated NET-624:
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Summary: SubnetInfo#toCidrNotation - a wrong format subnet mask is allowed
(was: SubnetInfo#toCidrNotation - a wrong format subnet mask is allows)
> SubnetInfo#toCidrNotation - a wrong format subnet mask is allowed
> -----------------------------------------------------------------
>
> Key: NET-624
> URL: https://issues.apache.org/jira/browse/NET-624
> Project: Commons Net
> Issue Type: Bug
> Affects Versions: 2.0
> Reporter: Makoto Sakaguchi
> Fix For: 3.7
>
>
> An IPv4 subnet mask, which is also the network mask, must consist of a set of
> contiguous 1-bits followed by a block of 0-bits (i.e. 255.255.255.0), but it
> does not check.
> {code}
> /* 255.255.0.1 is 11111111.11111111.00000000.00000001 in binary */
> SubnetUtils su = new SubnetUtils("192.168.0.1", "255.255.0.1"); // expect
> error
> SubnetInfo si = su.getInfo();
> System.out.println(si.getNetmask()); // Expect error or 255.255.0.1
> 255.255.128.0
> {code}
> https://github.com/apache/commons-net/pull/13
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