Report bugs for rp-pppoe-server of 17.01.0 and 17.01.1

Name the tree/revision/version
LEDE 17.01.0 and 17.01.1

Name the affected device
Router: qihoo-c301 ,newifi-y1 and HG556a-A
LEDE:
lede-17.01.1-ar71xx-generic-qihoo-c301-squashfs-sysupgrade
lede-17.01.0-r3205-59508e3-ar71xx-generic-qihoo-c301-squashfs-sysupgrade
lede-17.01.1-brcm63xx-generic-HG556a-A-squashfs-cfe
lede-17.01.0-r3205-59508e3-ramips-mt7620-y1-squashfs-sysupgrade

what does it not do that it should do
Rp-pppoe-server dosen't work.
After installed rp-pppoe-server rp-pppoe-common and configure chap-secrets ,it dos't work.
Logs show "/etc/ppp/plugins/rp-pppoe.so: new_style_driver: symbol not found",then pppoe session terminated.

Steps to reproduce.
I try to change the version of LEDE,and change the route device,the same result.

What you have already done to workaround/fix the problem
So,I test in OpenWRT 14.07 in "OpenWrt Barrier Breaker 14.07 / LuCI Trunk (0.12+svn-r10530) ","rp-pppoe-server 3.11-1"
It works fine.

Any additional info you thinks is important
None.