Wireshark · Wireshark-users: Re: [Wireshark-users] add random packet lost

[Hansang Bae <hbae@xxxxxxxxxx>]

miguel olivares varela wrote:
>  
> Hi everybody
>  
> i have pcap file and i want to add random packet lost, i tried to use 
> editcap
>  
> editcap -E 0.05 file.pcap file-error.pcap
>  
> but i have a lot of errors not only packet lost.
>  
> does anybody help me?

You can't just use editcap.  If you do, you'll lose the packets and 
Wireshark will flag the missing packets (prev segment lost).  However, 
you won't see retransmissions, fast retansmissions, triple duplicate 
acks etc. If you want to see what packet loss looks like, create a 
duplex mismatch and push/pull some files via ftp



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Thanks,
Hansang