How to pipe tshark output in realtime?

Hi everyone,

I am monitoring wifi traffic and want to process every output line in real time.

Monitoring works:

sudo tshark -i mon0 subtype probereq

Saving to a file works:

sudo tshark -i mon0 subtype probereq > pcap.log

Piping file for processing works:

cat pcap.log | while read -r line; do echo "$line"; done

But piping thark output directly just doesn't work:

sudo tshark -i mon0 subtype probereq | while read -r line; do echo "$line"; done

What's the problem? How can I process every line of tshark output in real time?

Cheers bluepuma