求救：华为防火墙使用ppppoe ping不通外网路由器，外网路由器能ping通防火墙pppoe端口

防火墙配置

sysname FW1
interface Dialer1
 link-protocol ppp
 ppp chap user admin
 ppp chap password cipher %$%$v^e9,2CdWPw`DN~BXfZ/['=+%$%$
 ip address ppp-negotiate
 dialer user admin
 dialer bundle 1
 dialer-group 1
 service-manage ping permit
#
l2tp-group default-lns
#
interface GigabitEthernet0/0/0
 undo shutdown
 ip binding vpn-instance default
 ip address 192.168.0.1 255.255.255.0
 alias GE0/METH
 service-manage https permit
 service-manage ping permit
#
interface GigabitEthernet1/0/0            
 pppoe-client dial-bundle-number 1
 undo shutdown
 service-manage ping permit
#
interface GigabitEthernet1/0/1
 undo shutdown
 ip address 172.1