| | | | | | | | |
|
|
|
You're here: Home |
|
Hi friends, I have two desktops which are installed with Fedora Core
release 3, connected with each other using Ethernet hub (crash net) They are not connected to the main network (i.e., uplink is
not connected) I am trying to establishing a network where the two PCs can
communicate each other using IPv6 addresses. Both hosts are IPv6 enabled. Iam able to ping the link-local ipv6 address from one host
to another host. But unable to ping the global ipv6 address. The configuration of the two PCs, which are named as Host-A
and Host-B are as shown below. Host-A configuration ----------------------------- After reboot, [root@localhost ~]# ifconfig lo Link
encap:Local Loopback inet
addr:127.0.0.1 Mask:255.0.0.0 inet6
addr: ::1/128 Scope:Host UP
LOOPBACK RUNNING MTU:16436 Metric:1 RX
packets:3586 errors:0 dropped:0 overruns:0 frame:0 TX
packets:3586 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX
bytes:4476276 (4.2 Mb) TX bytes:4476276 (4.2 Mb) ----------------------------------------------------------------------------------------------------- Iam assigning 10.255.114.96 address to Host-A [root@localhost ~]# ifconfig eth0 10.255.114.96 eth0 Link encap:Ethernet
HWaddr 00:08:74:2E:41:54 inet
addr:10.255.114.96 Bcast:10.255.255.255 Mask:255.0.0.0 inet6
addr: fe80::208:74ff:fe2e:4154/64 Scope:Link UP
BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX
packets:1 errors:0 dropped:0 overruns:0 frame:0 TX
packets:19 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000 RX
bytes:64 (64.0 b) TX bytes:3910 (3.8 Kb) Base
address:0xecc0 Memory:ff8e0000-ff900000 lo Link
encap:Local Loopback inet
addr:127.0.0.1 Mask:255.0.0.0 inet6
addr: ::1/128 Scope:Host UP
LOOPBACK RUNNING MTU:16436 Metric:1 RX
packets:3586 errors:0 dropped:0 overruns:0 frame:0 TX
packets:3586 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX
bytes:4476276 (4.2 Mb) TX bytes:4476276 (4.2 Mb) ----------------------------------------------------------------------------------------------- Initial /etc/resolv.conf ; generated by /sbin/dhclient-script search xerox.celstream.com nameserver 10.255.114.25 --------------------------------------------------------------------- I have used bind-9.3.2 for DNS Server configuration. After changing resolv.conf as shown below ; generated by /sbin/dhclient-script search celstream1.com nameserver 10.255.114.96 ------------------------------------------------------------------------- Ping DNS Server “celstream1.com” [root@localhost ~]# ping ns1.celstream1.com 64 bytes from ns1.celstream1.com (10.255.114.96): icmp_seq=0
ttl=64 time=0.056 ms 64 bytes from ns1.celstream1.com (10.255.114.96): icmp_seq=1
ttl=64 time=0.072 ms 64 bytes from ns1.celstream1.com (10.255.114.96): icmp_seq=2
ttl=64 time=0.068 ms 64 bytes from ns1.celstream1.com (10.255.114.96): icmp_seq=3
ttl=64 time=0.068 ms --- ns1.celstream1.com ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time
3000ms rtt min/avg/max/mdev = 0.056/0.066/0.072/0.006 ms, pipe 2 ------------------------------------------------------------------------------------------------------------------------------ Ping6 Link-local ipv6 address fe80::208:74ff:fe2e:4154 [root@localhost ~]# ping6 -I eth0 fe80::208:74ff:fe2e:4154 64 bytes from fe80::208:74ff:fe2e:4154: icmp_seq=0 ttl=64
time=0.111 ms 64 bytes from fe80::208:74ff:fe2e:4154: icmp_seq=1 ttl=64
time=0.060 ms 64 bytes from fe80::208:74ff:fe2e:4154: icmp_seq=2 ttl=64
time=0.060 ms 64 bytes from fe80::208:74ff:fe2e:4154: icmp_seq=3 ttl=64
time=0.059 ms --- fe80::208:74ff:fe2e:4154 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time
2999ms rtt min/avg/max/mdev = 0.059/0.072/0.111/0.023 ms, pipe 2 ----------------------------------------------------------------------------------------------------------------------------- /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=dhcp > TYPE=Ethernet IPV6INIT=yes IPV6TO4INIT=yes DHCP6C=yes IPV6ADDR=fe80::208:74ff:fe2e:4154 --------------------------------------------------------------------------- /etc/sysconfig/network-scripts/ifcfg-lo DEVICE=lo IPADDR=127.0.0.1 NETMASK=255.0.0.0 NETWORK=127.0.0.0 # If you're having problems with gated making 127.0.0.0/8 a
martian, # you can change this to something else (255.255.255.255,
for example) BROADCAST=127.255.255.255 > NAME=loopback ----------------------------------------------------------------------------- [root@localhost ~]# ip -6 route show unreachable ::/96 dev lo metric 1024 error -101
mtu 16436 advmss 16376 metric10 64 unreachable ::ffff:0.0.0.0/96 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:a00::/24 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:7f00::/24 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:a9fe::/32 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:ac10::/28 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:c0a8::/32 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:e000::/19 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 3ffe:ffff::/32 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 fe80::/64 dev eth0 metric 256 mtu 1500 advmss
1440 metric10 64 ff00::/8 dev eth0 metric 256 mtu 1500 advmss
1440 metric10 1 unreachable default dev lo proto none metric
-1 error -101 metric10 255 ----------------------------------------------------------------------------- [root@localhost ~]# ip route show [root@localhost network-scripts]# ip route show 169.254.0.0/16 dev lo scope link 10.0.0.0/8 dev eth0 proto kernel scope
link src 10.255.114.96 ------------------------------------------------------------------------------ ping6 Host-B Ipv6 address [root@localhost network-scripts]# ping6 -I eth0
fe80::206:5bff:fe20:406c 64 bytes from fe80::206:5bff:fe20:406c: icmp_seq=0 ttl=64
time=1.31 ms 64 bytes from fe80::206:5bff:fe20:406c: icmp_seq=1 ttl=64
time=0.500 ms 64 bytes from fe80::206:5bff:fe20:406c: icmp_seq=2 ttl=64
time=0.435 ms --- fe80::206:5bff:fe20:406c ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time
2000ms rtt min/avg/max/mdev = 0.435/0.750/1.316/0.401 ms, pipe 2 ------------------------------------------------------------------------------ Using dibbler-0.4.1-linux.tar for DHCP Ipv6 server and
client I got the Global inet6 addr which is 2000::bd [root@localhost ~]# ifconfig eth0 Link encap:Ethernet
HWaddr 00:08:74:2E:41:54 inet
addr:10.255.114.96 Bcast:10.255.255.255 Mask:255.0.0.0 inet6
addr: fe80::208:74ff:fe2e:4154/64 Scope:Link inet6
addr: 2000::bd/128 Scope:Global UP
BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX
packets:71 errors:0 dropped:0 overruns:0 frame:0 TX
packets:96 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000 RX
bytes:8846 (8.6 Kb) TX bytes:10285 (10.0 Kb) Base
address:0xecc0 Memory:ff8e0000-ff900000 lo Link
encap:Local Loopback inet
addr:127.0.0.1 Mask:255.0.0.0 inet6
addr: ::1/128 Scope:Host UP
LOOPBACK RUNNING MTU:16436 Metric:1 RX
packets:10317 errors:0 dropped:0 overruns:0 frame:0 TX
packets:10317 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX
bytes:4950042 (4.7 Mb) TX bytes:4950042 (4.7 Mb) ------------------------------------------------------------------------------ ping6 Host-B Global Ipv6 addr 2000::7f from Host-A [root@localhost ~]# ping6 -I eth0 2000::7f connect: Network is unreachable ------------------------------------------------------------------------------ /etc/sysconfig/network NETWORKING=yes HOSTNAME=localhost.localdomain NETWORKING_IPV6=yes IPV6INIT=yes IPV6FORWARDING=yes IPV6_DEFAULTDEV=tun6to4 Host-B Configuration ---------------------------------- Initial ifconfig [root@localhost ~]# ifconfig lo Link
encap:Local Loopback inet
addr:127.0.0.1 Mask:255.0.0.0 inet6
addr: ::1/128 Scope:Host UP
LOOPBACK RUNNING MTU:16436 Metric:1 RX
packets:4367 errors:0 dropped:0 overruns:0 frame:0 TX
packets:4367 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX
bytes:5458005 (5.2 Mb) TX bytes:5458005 (5.2 Mb) -------------------------------------------------------------------------- [root@localhost ~]# ifconfig eth0 10.255.114.176 eth0 Link encap:Ethernet
HWaddr 00:06:5B:20:40:6C inet
addr:10.255.114.176 Bcast:10.255.255.255 Mask:255.0.0.0 inet6
addr: fe80::206:5bff:fe20:406c/64 Scope:Link UP
BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX
packets:0 errors:0 dropped:0 overruns:0 frame:0 TX
packets:23 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000 RX
bytes:342 (342.0 b) TX bytes:3955 (3.8 Kb)
Interrupt:11 Base address:0xec80 lo Link
encap:Local Loopback inet
addr:127.0.0.1 Mask:255.0.0.0 inet6
addr: ::1/128 Scope:Host UP
LOOPBACK RUNNING MTU:16436 Metric:1 RX
packets:4367 errors:0 dropped:0 overruns:0 frame:0 TX
packets:4367 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX
bytes:5458005 (5.2 Mb) TX bytes:5458005 (5.2 Mb) ---------------------------------------------------------------------------- [root@localhost ~]# ifconfig -a eth0 Link encap:Ethernet
HWaddr 00:06:5B:20:40:6C inet
addr:10.255.114.176 Bcast:10.255.255.255 Mask:255.0.0.0 inet6
addr: fe80::206:5bff:fe20:406c/64 Scope:Link UP
BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX
packets:0 errors:0 dropped:0 overruns:0 frame:0 TX
packets:38 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000 RX
bytes:342 (342.0 b) TX bytes:5605 (5.4 Kb)
Interrupt:11 Base address:0xec80 lo Link
encap:Local Loopback inet
addr:127.0.0.1 Mask:255.0.0.0 inet6
addr: ::1/128 Scope:Host UP
LOOPBACK RUNNING MTU:16436 Metric:1 RX
packets:4367 errors:0 dropped:0 overruns:0 frame:0 TX
packets:4367 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX
bytes:5458005 (5.2 Mb) TX bytes:5458005 (5.2 Mb) sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1 RX
packets:0 errors:0 dropped:0 overruns:0 frame:0 TX
packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX
bytes:0 (0.0 b) TX bytes:0 (0.0 b) ------------------------------------------------------------------------- After running dibbler-client [root@localhost ~]# ifconfig eth0 Link encap:Ethernet
HWaddr 00:06:5B:20:40:6C inet
addr:10.255.114.176 Bcast:10.255.255.255 Mask:255.0.0.0 inet6
addr: fe80::206:5bff:fe20:406c/64 Scope:Link inet6
addr: 2000::7f/128 Scope:Global UP
BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX
packets:55 errors:0 dropped:0 overruns:0 frame:0 TX
packets:99 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000 RX
bytes:5706 (5.5 Kb) TX bytes:13080 (12.7 Kb)
Interrupt:11 Base address:0xec80 lo Link
encap:Local Loopback inet
addr:127.0.0.1 Mask:255.0.0.0 inet6
addr: ::1/128 Scope:Host UP
LOOPBACK RUNNING MTU:16436 Metric:1 RX
packets:4367 errors:0 dropped:0 overruns:0 frame:0 TX
packets:4367 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX
bytes:5458005 (5.2 Mb) TX bytes:5458005 (5.2 Mb) ------------------------------------------------------------------------- [root@localhost ~]# ping ns1.celstream1.com 64 bytes from ns1.celstream1.com (10.255.114.96): icmp_seq=0
ttl=64 time=0.434 ms 64 bytes from ns1.celstream1.com (10.255.114.96): icmp_seq=1
ttl=64 time=0.473 ms 64 bytes from ns1.celstream1.com (10.255.114.96): icmp_seq=2
ttl=64 time=0.506 ms --- ns1.celstream1.com ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time
2001ms rtt min/avg/max/mdev = 0.434/0.471/0.506/0.029 ms, pipe 2 ---------------------------------------------------------------------- /etc/resolv.conf ; generated by /sbin/dhclient-script search xerox.celstream.com nameserver 10.255.114.96 nameserver ::1 search celstream1.com -------------------------------------------------------------------------- /etc/sysconfig/network NETWORKING=yes HOSTNAME=localhost.localdomain NETWORKING_IPV6=yes IPV6INIT=yes IPV6FORWARDING=yes IPV6_DEFAULTDEV=tun6to4 ----------------------------------------------------------------------- /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=dhcp > TYPE=Ethernet IPV6INIT=yes IPV6TO4INIT=yes IPV6ADDR=fe80::206:5bff:fe20:406c DHCP6C=yes --------------------------------------------------------------------------- [root@localhost ~]# ip -6 route show unreachable ::/96 dev lo metric 1024 error -101
mtu 16436 advmss 16376 metric10 64 unreachable ::ffff:0.0.0.0/96 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:a00::/24 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:7f00::/24 dev lo metric 1024 error
-101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:a9fe::/32 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:ac10::/28 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:c0a8::/32 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 2002:e000::/19 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 unreachable 3ffe:ffff::/32 dev lo metric 1024
error -101 mtu 16436 advmss 16376 metric10 64 fe80::/64 dev eth0 metric 256 mtu 1500 advmss
1440 metric10 64 ff00::/8 dev eth0 metric 256 mtu 1500 advmss
1440 metric10 1 unreachable default dev lo proto none metric
-1 error -101 metric10 255 --------------------------------------------------------------------------------- [root@localhost ~]# ip route show 169.254.0.0/16 dev lo scope link 10.0.0.0/8 dev eth0 proto kernel scope
link src 10.255.114.176 The problem is I am able to ping6 the link-local ipv6 addresses across the
two hosts. And also able to ping6 the DHCP assigned global ipv6 address within
the same host but not from the other host. It says “Network is
unreachable” as shown below. [root@localhost ~]# ping6 -I eth0 2000::7f connect: Network is unreachable Please let me know if I have missed out any other settings
or configuration, so that I can ping6 using DHCP assigned global ipv6 address
across these hosts. Thanks in advance, Soma
|
