ipkg list

...
ppp - 2.4.3-7 - 
ppp-mod-pppoe - 2.4.3-7 - 
...

openWrt commandline

root@OpenWrt:/etc/ppp# nvram set ppp_username="<ANSCHLUSSKENNUNG><T-ONLINE-NR>#0001@t-online.de"
root@OpenWrt:/etc/ppp# nvram set ppp_passwd="<PASSWORT>"
root@OpenWrt:/etc/ppp# nvram get wan_device
vlan1
root@OpenWrt:/etc/ppp# nvram set pppoe_ifname=vlan1
root@OpenWrt:/etc/ppp# nvram set ppp_mtu=1492
root@OpenWrt:/etc/ppp# nvram set wan_proto=pppoe
root@OpenWrt:/etc/ppp# nvram commit
root@OpenWrt:/etc/ppp# nvram get ppp_redialperiod
30
root@OpenWrt:/etc/ppp# nvram get ppp_demand
1

syslogd -L -O /var/log/messages

Jan  1 00:48:55 OpenWrt kern.info kernel: PPP generic driver version 2.4.2
Jan  1 00:48:55 OpenWrt kern.info pppd[607]: Plugin rp-pppoe.so loaded.
Jan  1 00:48:55 OpenWrt kern.notice pppd[607]: pppd 2.4.3 started by root, uid 0
Jan  1 00:48:55 OpenWrt kern.info pppd[607]: Using interface ppp0
Jan  1 00:48:55 OpenWrt kern.warn pppd[607]: Couldn't increase MTU to 1500
Jan  1 00:48:55 OpenWrt kern.warn pppd[607]: Couldn't increase MRU to 1500
Jan  1 00:48:55 OpenWrt kern.info dnsmasq[488]: reading /tmp/resolv.conf.auto
Jan  1 00:48:55 OpenWrt kern.info dnsmasq[488]: using nameserver 1.1.1.1#53
Jan  1 00:48:55 OpenWrt kern.info dnsmasq[488]: using local addresses only for domain lan
Jan  1 00:48:55 OpenWrt kern.notice pppd[607]: local  IP address 10.64.64.64
Jan  1 00:48:55 OpenWrt kern.notice pppd[607]: remote IP address 10.112.112.112
Jan  1 00:49:14 OpenWrt kern.info pppd[607]: Starting link
Jan  1 00:49:14 OpenWrt kern.info pppd[607]: PPP session is 6679
Jan  1 00:49:14 OpenWrt kern.notice pppd[607]: Connect: ppp0 <--> vlan1
Jan  1 00:49:14 OpenWrt kern.warn pppd[607]: Couldn't increase MTU to 1500
Jan  1 00:49:14 OpenWrt kern.warn pppd[607]: Couldn't increase MRU to 1500
Jan  1 00:49:14 OpenWrt kern.notice pppd[607]: PAP authentication succeeded
Jan  1 00:49:15 OpenWrt kern.notice pppd[607]: PAP authentication succeeded
Jan  1 00:49:15 OpenWrt kern.notice pppd[607]: peer from calling number 00:90:1A:A0:15:60 authorized
Jan  1 00:49:15 OpenWrt kern.info dnsmasq[488]: reading /tmp/resolv.conf.auto
Jan  1 00:49:15 OpenWrt kern.info dnsmasq[488]: using nameserver 217.237.149.142#53
Jan  1 00:49:15 OpenWrt kern.info dnsmasq[488]: using nameserver 217.237.150.205#53
Jan  1 00:49:15 OpenWrt kern.info dnsmasq[488]: using local addresses only for domain lan
Jan  1 00:49:15 OpenWrt kern.warn pppd[607]: Local IP address changed to 84.140.210.52
Jan  1 00:49:15 OpenWrt kern.warn pppd[607]: Remote IP address changed to 217.0.116.103
Jan  1 00:49:16 OpenWrt kern.info pppd[607]: Open ICMP 84.140.210.52 -> 194.25.2.129 
Jan  1 00:49:25 OpenWrt kern.notice pppd[607]: Terminating connection due to lack of activity.
Jan  1 00:49:25 OpenWrt kern.info pppd[607]: Connect time 0.2 minutes.
Jan  1 00:49:25 OpenWrt kern.info pppd[607]: Sent 336 bytes, received 336 bytes.
Jan  1 00:49:25 OpenWrt kern.warn pppd[607]: Couldn't increase MTU to 1500
Jan  1 00:49:25 OpenWrt kern.warn pppd[607]: Couldn't increase MRU to 1500
Jan  1 00:49:25 OpenWrt kern.notice pppd[607]: Connection terminated.
Jan  1 00:50:01 OpenWrt kern.info pppd[607]: Terminating on signal 15
Jan  1 00:50:01 OpenWrt kern.info pppd[607]: Exit.