interface loopback 0
 ip address 10.6.100.1 255.255.255.255
 ipv6 address 1234::10:6:100:1/128
 cdp enable
 no shutdown
interface serial 0/0
 description labe-s1
 ip address 10.6.1.1 255.255.255.252
 ipv6 address 1234::10:6:1:1/126
 clock rate 125000
 cdp enable
 no shutdown
interface serial 0/1
 description labd-s0
 ip address 10.4.1.2 255.255.255.252
 ipv6 address 1234::10:4:1:2/126
 cdp enable
 no shutdown
interface fastethernet 0/0
 description cata1-fe10 (cisco vlan)
 ip address 192.168.1.196 255.255.255.0
 ipv6 address 2001:738:7001:2003:1000::196/68
 cdp enable
 no shutdown