# net specification in bro

**URL:** <https://community.zeek.org/t/net-specification-in-bro/110>\
**Category:** Zeek\
**Created:** [November 15, 2000, 10:06am UTC](https://community.zeek.org/t/net-specification-in-bro/110 "2000-11-15T10:06:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Antonella\_Giani](https://avatars.discourse-cdn.com/v4/letter/a/d07c76/32.png) [@Antonella\_Giani](https://community.zeek.org/u/Antonella_Giani)\
**Post date:** [November 15, 2000, 10:06am UTC](https://community.zeek.org/t/net-specification-in-bro/110/1 "2000-11-15T10:06:46Z")

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I downloaded and installed bro 0.6 without problems, apart from some  
minor changes required in Makefile.in and Rlogin.h.

I noticed, however, that this version of bro still validates values  
of type 'net' according to the outdated 'class A/B/C/D' convention.  
This is a problem for us, because our local network includes two  
non contiguous nets /24 with addresses belonging to 'old' class B.

Before modifying bro source code, I ask to this list whether bro  
developers have already updated the code to meet more recent  
conventions (e.g. CIDR format).

In addition, I'd like to know whether bro developers have planned  
to extend bro language with a type 'interval of IP addresses'.

Thank you,

Antonella

&nbsp;&nbsp;Antonella Giani  
&nbsp;&nbsp;Dipartimento di Informatica - Corso Italia 40, 56125 Pisa (Italy)  
&nbsp;&nbsp;Tel: +39-050-887228 Fax: +39-050-887226  
&nbsp;&nbsp;web: [http://www.di.unipi.it/~giani/giani.html](http://www.di.unipi.it/~giani/giani.html)

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**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/zeek/original/1X/f09d732bc2cc7c7cc7e35db67cf4e1d5233ce7a7.png) [@system](https://community.zeek.org/u/system)\
**Post date:** [May 6, 2022, 3:36pm UTC](https://community.zeek.org/t/net-specification-in-bro/110/2 "2022-05-06T15:36:13Z")

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