iptraf-ng-1.1.1 does not show traffic on some types of interfaces.
Older(1.0.2) version did not show traffic on tun devices under Linux,
new(1.1.1) also does not show it on ppp devices.
Which information could i provide to fix this issue?
My system: Gentoo Linux
Arch: x86_64(but tried on x86 too)