Put an "ss" expression in the parameters to filter, i.e. dst 1.0.0.0/8

conndata

#!/bin/bash
ss -tine $@ \
        | tr '\t' ' ' \
        | sed -e '1d' \
                      -e ': # first line is for humans' \
              -e 's/sk:ffff[0-9a-fA-F]\+//g' \
                      -e ': # remove the skbuf stuff' \
              -e 's/\s\+ino:[0-9]\{,8\}//g' \
                      -e ': # remove the ino stuff' \
              -e 'N;s/\n/ /g' \
                      -e ': # join the next two lines together' \
              -re 's/(timer:[^ ]+)(.*)/\2 \1/g' \
                      -e ': # move the timer to the end (neater)' \
              -e 's/\s+cubic/ cubic/g' \
                      -e ': # remove all space after the IP/ports' \
              -e 's/send /send:/g' \
                      -e ': # send does not have a colon, annoying!'