Bug #5168
Updated by Victor Julien over 2 years ago
A rule like @alert ip any any -> 0.0.0.5/0.0.0.5 any (sid:1;)@ fails to work properly, hits a @DEBUG_VALIDATE_BUG_ON@ and leaks memory.
The engine internally only correctly handles netmasks that can be expressed through the CIDR notation as well.
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(From: https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing)