Would you please provide iptraf package into repository? Thanks
search for iptraf-ng 
root@turris:~# opkg install iptraf-ng
Installing iptraf-ng (1.1.4-1) to root…
Downloading https://api.turris.cz/openwrt-repo/turris/packages//packages/iptraf-ng_1.1.4-1_mpc85xx.ipk.
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 78834 100 78834 0 0 483k 0 --:–:-- --:–:-- --:–:-- 487k
Configuring iptraf-ng.
Segmentation fault
Turris 1.0
Chce to počkat na update … wait for the update …