### Standard PPP options we always use
#
PPP_STD_OPTIONS="$PLUGOPTS $DNS defaultroute noipdefault noauth"
- PPP_STD_OPTIONS+=" default-asyncmap hide-password nodetach mtu ${MTU}"
+ PPP_STD_OPTIONS+=" default-asyncmap hide-password nodetach"
PPP_STD_OPTIONS+=" mru ${MRU} noaccomp nodeflate nopcomp novj novjccomp"
PPP_STD_OPTIONS+=" nobsdcomp user ${USERNAME} lcp-echo-interval 20"
PPP_STD_OPTIONS+=" lcp-echo-failure 5 ${AUTH}"
+
+ if [ -n "${MTU}" ]; then
+ PPP_STD_OPTIONS="${PPP_STD_OPTIONS} mtu ${MTU}"
+ fi
+
+ if [ -n "${MRU}" ]; then
+ PPP_STD_OPTIONS="${PPP_STD_OPTIONS} mru ${MRU}"
+ fi
### Debugging
#