- VPI=$(nvram get atm_vpi)
- VCI=$(nvram get atm_vci)
- USERNAME=$(nvram get ppp_username)
- PASSWORD=$(nvram get ppp_passwd)
- REDIAL=$(nvram get ppp_redialperiod)
- REDIAL=${REDIAL:+lcp-echo-interval $REDIAL}
- IDLETIME=$(nvram get ppp_idletime)
- IDLETIME=${IDLETIME:+lcp-echo-failure $IDLETIME}
- MTU=$(nvram get ppp_mtu)
- MTU=${MTU:-1500}
+ VPI=$(nvram get atm_vpi)
+ VCI=$(nvram get atm_vci)
+ USERNAME=$(nvram get ppp_username)
+ PASSWORD=$(nvram get ppp_passwd)
+ KEEPALIVE=$(nvram get ppp_redialperiod)
+ KEEPALIVE=${KEEPALIVE:+lcp-echo-interval 10 lcp-echo-failure $KEEPALIVE}
+ DEMAND=$(nvram get ppp_demand)
+ case "$DEMAND" in
+ on|1|enabled)
+ DEMAND=$(nvram get ppp_idletime)
+ DEMAND=${IDLETIME:+demand idle $IDLETIME}
+ ;;
+ *) DEMAND="";;
+ esac
+ MTU=$(nvram get ppp_mtu)
+ MTU=${MTU:-1500}