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From "Makoto Sakaguchi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (NET-624) SubnetInfo#toCidrNotation - allow a subnet mask
Date Thu, 09 Mar 2017 21:34:37 GMT

     [ https://issues.apache.org/jira/browse/NET-624?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Makoto Sakaguchi updated NET-624:
---------------------------------
    Description: 
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}

  was:
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}


> 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 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}



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