Bash Sed Pipe to Command One-Liner

I'm trying to dump output from all of my interfaces. This is what I've got so far:

ifconfig | awk '{print $1}' | sed s'/.$//'

I'd like to have something like :

ifconfig | awk '{print $1}' | sed s'/.$//' | tcpdump -i {} -c 1

where {} is what's passed in the pipe.

How can I pipe out to tcpdump in one line?

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