R1(config)#int tunnel 0 R1(config-if)# *Jul 9 23:59:45.338: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to down R1(config-if)#tunn R1(config-if)#tunnel mo R1(config-if)#tunnel mode ? aurp AURP TunnelTalk AppleTalk encapsulation cayman Cayman TunnelTalk AppleTalk encapsulation dvmrp DVMRP multicast tunnel eon EON compatible CLNS tunnel gre generic route encapsulation protocol ipip IP over IP encapsulation ipsec IPSec tunnel encapsulation iptalk Apple IPTalk encapsulation ipv6 Generic packet tunneling in IPv6 ipv6ip IPv6 over IP encapsulation mpls MPLS encapsulations nos IP over IP encapsulation (KA9Q/NOS compatible) rbscp RBSCP in IP tunnel udp UDP encapsulation protocol R1(config-if)#tunnel mode gre ? ip over IP ipv6 over IPv6 multipoint over IPv4 (multipoint)
conf t ! hostname R1 ! int gig0/0 ip address 192.168.0.1 255.255.255.0 no shut exit ! int gig0/1 ipv6 address 2001:1:1:1::1/64 no shut exit ! end ! wr
conf t ! hostname R2 ! int gig0/0 ip address 192.168.0.2 255.255.255.0 no shut exit ! int gig0/1 ipv6 address 2001:2:2:2::1/64 no shut exit ! end ! wr
ip 2001:1:1:1::2/64 2001:1:1:1::1
ip 2001:1:1:1::3/64 2001:1:1:1::1
ip 2001:1:1:1::4/64 2001:1:1:1::1
ip 2001:2:2:2::2/64 2001:2:2:2::1
ip 2001:2:2:2::3/64 2001:2:2:2::1
PC-1> ip ? ip ARG ... [OPTION] Configure the current VPC's IP settings ARG ...: address [mask] [gateway] address [gateway] [mask] Set the VPC's ip, default gateway ip and network mask Default IPv4 mask is /24, IPv6 is /64. Example: ip 10.1.1.70/26 10.1.1.65 set the VPC's ip to 10.1.1.70, the gateway to 10.1.1.65, the netmask to 255.255.255.192. In tap mode, the ip of the tapx is the maximum host ID of the subnet. In the example above the tapx ip would be 10.1.1.126 mask may be written as /26, 26 or 255.255.255.192 auto Attempt to obtain IPv6 address, mask and gateway using SLAAC dhcp [OPTION] Attempt to obtain IPv4 address, mask, gateway, DNS via DHCP -d Show DHCP packet decode -r Renew DHCP lease -x Release DHCP lease dns ip Set DNS server ip, delete if ip is '0' domain NAME Set local domain name to NAME PC-1> ip 2001:1:1:1::2/64 2001:1:1:1::1 PC1 : 2001:1:1:1::2/64 PC-1> ping6 Bad command: "ping6". Use ? for help. PC-1> ping 2001:1:1:1::1 2001:1:1:1::1 icmp6_seq=1 ttl=64 time=2.323 ms 2001:1:1:1::1 icmp6_seq=2 ttl=64 time=2.278 ms 2001:1:1:1::1 icmp6_seq=3 ttl=64 time=1.911 ms 2001:1:1:1::1 icmp6_seq=4 ttl=64 time=1.779 ms 2001:1:1:1::1 icmp6_seq=5 ttl=64 time=1.852 ms PC-1> ping 2001:1:1:1::3 2001:1:1:1::3 icmp6_seq=1 timeout 2001:1:1:1::3 icmp6_seq=2 timeout 2001:1:1:1::3 icmp6_seq=3 timeout 2001:1:1:1::3 icmp6_seq=4 timeout 2001:1:1:1::3 icmp6_seq=5 timeout PC-1> ping 2001:1:1:1::4 2001:1:1:1::4 icmp6_seq=1 timeout 2001:1:1:1::4 icmp6_seq=2 timeout 2001:1:1:1::4 icmp6_seq=3 timeout 2001:1:1:1::4 icmp6_seq=4 timeout 2001:1:1:1::4 icmp6_seq=5 timeout PC-1> ping 2001:1:1:1::2 2001:1:1:1::2 icmp_seq=1 ttl=64 time=0.001 ms 2001:1:1:1::2 icmp_seq=2 ttl=64 time=0.001 ms 2001:1:1:1::2 icmp_seq=3 ttl=64 time=0.001 ms 2001:1:1:1::2 icmp_seq=4 ttl=64 time=0.001 ms 2001:1:1:1::2 icmp_seq=5 ttl=64 time=0.001 ms PC-1> ping 2001:1:1:1::4 2001:1:1:1::4 icmp6_seq=1 timeout 2001:1:1:1::4 icmp6_seq=2 timeout 2001:1:1:1::4 icmp6_seq=3 timeout 2001:1:1:1::4 icmp6_seq=4 timeout 2001:1:1:1::4 icmp6_seq=5 timeout PC-1> ping 2001:1:1:1::1 2001:1:1:1::1 icmp6_seq=1 ttl=64 time=5.849 ms 2001:1:1:1::1 icmp6_seq=2 ttl=64 time=7.039 ms 2001:1:1:1::1 icmp6_seq=3 ttl=64 time=7.016 ms 2001:1:1:1::1 icmp6_seq=4 ttl=64 time=6.697 ms 2001:1:1:1::1 icmp6_seq=5 ttl=64 time=7.019 ms PC-1> ping 2001:1:1:1::2 2001:1:1:1::2 icmp_seq=1 ttl=64 time=0.001 ms 2001:1:1:1::2 icmp_seq=2 ttl=64 time=0.001 ms 2001:1:1:1::2 icmp_seq=3 ttl=64 time=0.001 ms 2001:1:1:1::2 icmp_seq=4 ttl=64 time=0.001 ms 2001:1:1:1::2 icmp_seq=5 ttl=64 time=0.001 ms PC-1> ping 2001:1:1:1::3 2001:1:1:1::3 icmp6_seq=1 timeout 2001:1:1:1::3 icmp6_seq=2 timeout 2001:1:1:1::3 icmp6_seq=3 timeout 2001:1:1:1::3 icmp6_seq=4 timeout 2001:1:1:1::3 icmp6_seq=5 timeout PC-1> ping 2001:1:1:1::3 2001:1:1:1::3 icmp6_seq=1 timeout 2001:1:1:1::3 icmp6_seq=2 timeout 2001:1:1:1::3 icmp6_seq=3 timeout 2001:1:1:1::3 icmp6_seq=4 timeout 2001:1:1:1::3 icmp6_seq=5 timeout PC-1> ip ip ARG ... [OPTION] Configure the current VPC's IP settings ARG ...: address [mask] [gateway] address [gateway] [mask] Set the VPC's ip, default gateway ip and network mask Default IPv4 mask is /24, IPv6 is /64. Example: ip 10.1.1.70/26 10.1.1.65 set the VPC's ip to 10.1.1.70, the gateway to 10.1.1.65, the netmask to 255.255.255.192. In tap mode, the ip of the tapx is the maximum host ID of the subnet. In the example above the tapx ip would be 10.1.1.126 mask may be written as /26, 26 or 255.255.255.192 auto Attempt to obtain IPv6 address, mask and gateway using SLAAC dhcp [OPTION] Attempt to obtain IPv4 address, mask, gateway, DNS via DHCP -d Show DHCP packet decode -r Renew DHCP lease -x Release DHCP lease dns ip Set DNS server ip, delete if ip is '0' domain NAME Set local domain name to NAME PC-1> show ipv6 NAME : PC-1[1] LINK-LOCAL SCOPE : fe80::250:79ff:fe66:6800/64 GLOBAL SCOPE : 2001:1:1:1::2/64 ROUTER LINK-LAYER : MAC : 00:50:79:66:68:00 LPORT : 10010 RHOST:PORT : 127.0.0.1:10011 MTU: : 1500 PC-1> ping 2001:1:1:1::3 2001:1:1:1::3 icmp6_seq=1 timeout 2001:1:1:1::3 icmp6_seq=2 timeout 2001:1:1:1::3 icmp6_seq=3 timeout 2001:1:1:1::3 icmp6_seq=4 timeout 2001:1:1:1::3 icmp6_seq=5 timeout PC-1> ping fe80::250:79ff:fe66:6801 fe80::250:79ff:fe66:6801 icmp6_seq=1 timeout fe80::250:79ff:fe66:6801 icmp6_seq=2 timeout fe80::250:79ff:fe66:6801 icmp6_seq=3 timeout fe80::250:79ff:fe66:6801 icmp6_seq=4 timeout fe80::250:79ff:fe66:6801 icmp6_seq=5 timeout PC-1> ping fe80::250:79ff:fe66:6801 fe80::250:79ff:fe66:6801 icmp6_seq=1 timeout fe80::250:79ff:fe66:6801 icmp6_seq=2 timeout fe80::250:79ff:fe66:6801 icmp6_seq=3 timeout fe80::250:79ff:fe66:6801 icmp6_seq=4 timeout fe80::250:79ff:fe66:6801 icmp6_seq=5 timeout
PC-1 to PC-2 ping fail.
I packet captured this each link.
I found Router Solicitation.
Enter global config into R1.
R1#conf t Enter configuration commands, one per line. End with CNTL/Z. R1(config)#ipv6 unicast-routing R1(config)#^Z R1# *Jul 10 12:29:30.731: %SYS-5-CONFIG_I: Configured from console by console
PC-1> ping fe80::250:79ff:fe66:6801 fe80::250:79ff:fe66:6801 icmp6_seq=1 ttl=63 time=12.556 ms fe80::250:79ff:fe66:6801 icmp6_seq=2 ttl=63 time=5.737 ms fe80::250:79ff:fe66:6801 icmp6_seq=3 ttl=63 time=2.097 ms fe80::250:79ff:fe66:6801 icmp6_seq=4 ttl=63 time=1.972 ms fe80::250:79ff:fe66:6801 icmp6_seq=5 ttl=63 time=6.617 ms PC-1> ping fe80::250:79ff:fe66:6801 fe80::250:79ff:fe66:6801 icmp6_seq=1 ttl=63 time=2.521 ms fe80::250:79ff:fe66:6801 icmp6_seq=2 ttl=63 time=2.451 ms fe80::250:79ff:fe66:6801 icmp6_seq=3 ttl=63 time=2.539 ms fe80::250:79ff:fe66:6801 icmp6_seq=4 ttl=63 time=4.155 ms fe80::250:79ff:fe66:6801 icmp6_seq=5 ttl=63 time=4.905 ms PC-1> ping 2001:1:1:1::3 2001:1:1:1::3 icmp6_seq=1 ttl=63 time=10.223 ms 2001:1:1:1::3 icmp6_seq=2 ttl=63 time=3.075 ms 2001:1:1:1::3 icmp6_seq=3 ttl=63 time=7.477 ms 2001:1:1:1::3 icmp6_seq=4 ttl=63 time=4.419 ms 2001:1:1:1::3 icmp6_seq=5 ttl=63 time=3.260 ms PC-1> save Saving startup configuration to startup.vpc . done
PC-2> ip 2001:1:1:1::3/64 2001:1:1:1::1 PC1 : 2001:1:1:1::3/64 PC-2> 2001:1:1:1::1 Bad command: "2001:1:1:1::1". Use ? for help. PC-2> png 2001:1:1:1::1 Bad command: "png 2001:1:1:1::1". Use ? for help. PC-2> ping 2001:1:1:1::1 2001:1:1:1::1 icmp6_seq=1 ttl=64 time=2.303 ms 2001:1:1:1::1 icmp6_seq=2 ttl=64 time=2.342 ms 2001:1:1:1::1 icmp6_seq=3 ttl=64 time=2.243 ms 2001:1:1:1::1 icmp6_seq=4 ttl=64 time=3.027 ms 2001:1:1:1::1 icmp6_seq=5 ttl=64 time=2.075 ms PC-2> show ipv6 NAME : PC-2[1] LINK-LOCAL SCOPE : fe80::250:79ff:fe66:6801/64 GLOBAL SCOPE : 2001:1:1:1::3/64 ROUTER LINK-LAYER : MAC : 00:50:79:66:68:01 LPORT : 10028 RHOST:PORT : 127.0.0.1:10029 MTU: : 1500 PC-2> fe80::250:79ff:fe66:6801 Bad command: "fe80::250:79ff:fe66:6801". Use ? for help. PC-2> save Saving startup configuration to startup.vpc . done PC-2> ping 2001:1:1:1::2 2001:1:1:1::2 icmp6_seq=1 ttl=63 time=2.592 ms 2001:1:1:1::2 icmp6_seq=2 ttl=63 time=2.313 ms 2001:1:1:1::2 icmp6_seq=3 ttl=63 time=4.196 ms 2001:1:1:1::2 icmp6_seq=4 ttl=63 time=3.127 ms 2001:1:1:1::2 icmp6_seq=5 ttl=63 time=3.685 ms
PC-3> ping 2001:1:1:1::1 2001:1:1:1::1 icmp6_seq=1 ttl=64 time=2.154 ms 2001:1:1:1::1 icmp6_seq=2 ttl=64 time=1.326 ms 2001:1:1:1::1 icmp6_seq=3 ttl=64 time=2.129 ms 2001:1:1:1::1 icmp6_seq=4 ttl=64 time=1.777 ms 2001:1:1:1::1 icmp6_seq=5 ttl=64 time=2.119 ms PC-3> show ipv6 NAME : PC-3[1] LINK-LOCAL SCOPE : fe80::250:79ff:fe66:6802/64 GLOBAL SCOPE : 2001:1:1:1::4/64 ROUTER LINK-LAYER : MAC : 00:50:79:66:68:02 LPORT : 10030 RHOST:PORT : 127.0.0.1:10031 MTU: : 1500 PC-3> save Saving startup configuration to startup.vpc . done
Same manner, I repeated same thing.
PC-4> ip 2001:2:2:2::2/64 2001:2:2:2::1 PC1 : 2001:2:2:2::2/64 PC-4> ping 2001:2:2:2::1 2001:2:2:2::1 icmp6_seq=1 ttl=64 time=2.513 ms 2001:2:2:2::1 icmp6_seq=2 ttl=64 time=2.613 ms 2001:2:2:2::1 icmp6_seq=3 ttl=64 time=1.975 ms 2001:2:2:2::1 icmp6_seq=4 ttl=64 time=2.008 ms 2001:2:2:2::1 icmp6_seq=5 ttl=64 time=2.334 ms PC-4> ping 2001:2:2:2::3 2001:2:2:2::3 icmp6_seq=1 timeout 2001:2:2:2::3 icmp6_seq=2 timeout 2001:2:2:2::3 icmp6_seq=3 timeout 2001:2:2:2::3 icmp6_seq=4 timeout 2001:2:2:2::3 icmp6_seq=5 timeout PC-4> ping 2001:2:2:2::3 2001:2:2:2::3 icmp6_seq=1 timeout 2001:2:2:2::3 icmp6_seq=2 timeout 2001:2:2:2::3 icmp6_seq=3 timeout 2001:2:2:2::3 icmp6_seq=4 timeout 2001:2:2:2::3 icmp6_seq=5 timeout
R2#conf t Enter configuration commands, one per line. End with CNTL/Z. R2(config)#ipv6 unicast-routing R2(config)#^Z R2# *Jul 10 12:29:33.466: %SYS-5-CONFIG_I: Configured from console by console
PC-4> ping 2001:2:2:2::3 2001:2:2:2::3 icmp6_seq=1 ttl=63 time=8.627 ms 2001:2:2:2::3 icmp6_seq=2 ttl=63 time=2.363 ms 2001:2:2:2::3 icmp6_seq=3 ttl=63 time=1.783 ms 2001:2:2:2::3 icmp6_seq=4 ttl=63 time=8.114 ms 2001:2:2:2::3 icmp6_seq=5 ttl=63 time=5.345 ms PC-4> save Saving startup configuration to startup.vpc . done
OK, It works.
Finally I verified R1 - R2 link IPv4 reachability.
R1#ping 192.168.0.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.0.2, timeout is 2 seconds: .!!!! Success rate is 80 percent (4/5), round-trip min/avg/max = 3/4/5 ms R1#ping 192.168.0.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.0.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 3/4/6 ms R1#ping 192.168.0.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.0.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/2 ms
Good.
<R1#sh ip int b Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.168.0.1 YES manual up up GigabitEthernet0/1 unassigned YES NVRAM up up GigabitEthernet0/2 unassigned YES NVRAM administratively down down GigabitEthernet0/3 unassigned YES NVRAM administratively down down R1#sh ipv6 int b GigabitEthernet0/0 [up/up] unassigned GigabitEthernet0/1 [up/up] FE80::E7D:49FF:FE94:BB01 2001:1:1:1::1 GigabitEthernet0/2 [administratively down/down] unassigned GigabitEthernet0/3 [administratively down/down] unassigned /code> <code> R2#sh ip int b Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.168.0.2 YES manual up up GigabitEthernet0/1 unassigned YES NVRAM up up GigabitEthernet0/2 unassigned YES NVRAM administratively down down GigabitEthernet0/3 unassigned YES NVRAM administratively down down R2#sh ipv6 int b GigabitEthernet0/0 [up/up] unassigned GigabitEthernet0/1 [up/up] FE80::E7D:49FF:FE66:5B01 2001:2:2:2::1 GigabitEthernet0/2 [administratively down/down] unassigned GigabitEthernet0/3 [administratively down/down] unassigned
Seems good.
conf t ! ipv6 unicast-routing ! ipv6 router rip P1 exit ! int gig0/1 ipv6 rip P1 enable exit ! interface tunnel 0 ipv6 address 2001:1:1:0::1/64 ipv6 rip P1 enable tunnel source 192.168.0.1 tunnel destination 192.168.0.2 tunnel mode ipv6ip exit ! end
conf t ! ipv6 unicast-routing ! ipv6 router rip P1 exit ! int gig0/1 ipv6 rip P1 enable exit ! interface tunnel 0 ipv6 address 2001:1:1:0::2/64 ipv6 rip P1 enable tunnel source 192.168.0.2 tunnel destination 192.168.0.1 tunnel mode ipv6ip exit ! end
R1#sh ipv6 ro IPv6 Routing Table - default - 6 entries Codes: C - Connected, L - Local, S - Static, U - Per-user Static route B - BGP, HA - Home Agent, MR - Mobile Router, R - RIP H - NHRP, I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea IS - ISIS summary, D - EIGRP, EX - EIGRP external, NM - NEMO ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect RL - RPL, O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1 OE2 - OSPF ext 2, ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2 la - LISP alt, lr - LISP site-registrations, ld - LISP dyn-eid a - Application C 2001:1:1::/64 [0/0] via Tunnel0, directly connected L 2001:1:1::1/128 [0/0] via Tunnel0, receive C 2001:1:1:1::/64 [0/0] via GigabitEthernet0/1, directly connected L 2001:1:1:1::1/128 [0/0] via GigabitEthernet0/1, receive R 2001:2:2:2::/64 [120/2] via FE80::C0A8:2, Tunnel0 L FF00::/8 [0/0] via Null0, receive R1#sh ip ro Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP a - application route + - replicated route, % - next hop override, p - overrides from PfR Gateway of last resort is not set 192.168.0.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.0.0/24 is directly connected, GigabitEthernet0/0 L 192.168.0.1/32 is directly connected, GigabitEthernet0/0
R2#sh ipv6 route IPv6 Routing Table - default - 6 entries Codes: C - Connected, L - Local, S - Static, U - Per-user Static route B - BGP, HA - Home Agent, MR - Mobile Router, R - RIP H - NHRP, I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea IS - ISIS summary, D - EIGRP, EX - EIGRP external, NM - NEMO ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect RL - RPL, O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1 OE2 - OSPF ext 2, ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2 la - LISP alt, lr - LISP site-registrations, ld - LISP dyn-eid a - Application C 2001:1:1::/64 [0/0] via Tunnel0, directly connected L 2001:1:1::2/128 [0/0] via Tunnel0, receive R 2001:1:1:1::/64 [120/2] via FE80::C0A8:1, Tunnel0 C 2001:2:2:2::/64 [0/0] via GigabitEthernet0/1, directly connected L 2001:2:2:2::1/128 [0/0] via GigabitEthernet0/1, receive L FF00::/8 [0/0] via Null0, receive R2#sh ip ro Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP a - application route + - replicated route, % - next hop override, p - overrides from PfR Gateway of last resort is not set 192.168.0.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.0.0/24 is directly connected, GigabitEthernet0/0 L 192.168.0.2/32 is directly connected, GigabitEthernet0/0
R1#ping ipv6 2001:2:2:2::2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 2001:2:2:2::2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 2/4/12 ms R1#ping ipv6 2001:2:2:2::1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 2001:2:2:2::1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 2/3/5 ms R1#ping ipv6 2001:1:1::2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 2001:1:1::2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 3/4/5 ms R1#ping ipv6 2001:2:2:2::2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 2001:2:2:2::2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 2/3/5 ms
end to end ping reachability check.
PC-1> ping 2001:1:1::2 2001:1:1::2 icmp6_seq=1 ttl=63 time=5.824 ms 2001:1:1::2 icmp6_seq=2 ttl=63 time=3.862 ms 2001:1:1::2 icmp6_seq=3 ttl=63 time=3.702 ms 2001:1:1::2 icmp6_seq=4 ttl=63 time=4.281 ms 2001:1:1::2 icmp6_seq=5 ttl=63 time=3.818 ms PC-1> ping 2001:2:2:2::2 2001:2:2:2::2 icmp6_seq=1 ttl=60 time=18.775 ms 2001:2:2:2::2 icmp6_seq=2 ttl=60 time=3.858 ms 2001:2:2:2::2 icmp6_seq=3 ttl=60 time=2.238 ms 2001:2:2:2::2 icmp6_seq=4 ttl=60 time=2.826 ms 2001:2:2:2::2 icmp6_seq=5 ttl=60 time=2.983 ms PC-1> ping 2001:2:2:2::3 2001:2:2:2::3 icmp6_seq=1 ttl=60 time=7.556 ms 2001:2:2:2::3 icmp6_seq=2 ttl=60 time=2.156 ms 2001:2:2:2::3 icmp6_seq=3 ttl=60 time=2.273 ms 2001:2:2:2::3 icmp6_seq=4 ttl=60 time=2.546 ms 2001:2:2:2::3 icmp6_seq=5 ttl=60 time=2.750 ms
R1#sh ipv6 int b tun0 Tunnel0 [up/up] FE80::C0A8:1 2001:1:1::1
R2#sh ipv6 int b tun0 Tunnel0 [up/up] FE80::C0A8:2 2001:1:1::2