defragmentation issue

[Nouar Ismail <nouaresmail () gmail com>]

Hello
I have pcap file of 450 icmp fragmented packets.
when i pass it to snort with only icmp rules ..i get no alerts. when i add
an ip rule i get exactly 450 alerts.
i set up the frag3_global: memcap 67108864, max_frags 131072
frag3_engine: : policy last detect_anomalies
does anybody have any idea of what is the problem ?!
#frag3_global

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