右上角的NetworkManager用不起来，只好用pppoe了

[root@localhost ~]# ls /etc/sysconfig/network-scripts/ | grep ppp0
ifcfg-ppp0
[root@localhost ~]# pppoe-status
pppoe-status: Link is up and running on interface ppp0
5: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1492 qdisc pfifo_fast state UNKNOWN qlen 3
link/ppp
inet 100.32.69.145 peer 100.32.46.1/32 scope global ppp0
valid_lft forever preferred_lft forever