Split Kismet log file

Hey guys,

Is there any way to split up a Kismet (tcpdump/libpcap format) log file in two
or more pieces? I left Kismet sniffing in a high-traffic network and ended up
with a huge 300 MB log file (about 600.000 packets), which freezes Wireshark
if I try to dissect it. I cannot use a faster machine now, so I need to split
this file in, at most, several 30-40 MB files.

Thanks in advance.

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