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From "Makoto Sakaguchi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (NET-624) SubnetInfo#toCidrNotation - allow a subnet mask
Date Thu, 09 Mar 2017 21:33:37 GMT
Makoto Sakaguchi created NET-624:
------------------------------------

             Summary: SubnetInfo#toCidrNotation - allow a subnet mask
                 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


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 Subnet("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}



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