I used to be able to opkg update && opkg install fping and fping would just work. But recently the fping package seems to install /usr/bin/fping owned by user:group 110:114. Even though it has SUID bit set because of the ownership it doesn't work until ownership is changed to root:root
yes... master had a change in the way opkg sets file permissions... check the fping Makefile and read this and subsequent adjustments on the mailing list / git log... ( or sit back and wait for teething issues to iron themselves out )...