Hi,
It's like this:
A eth0 ====== eth3 B eth1
eth0:
192.168.0.2/24
2020::2/128
eth3
192.168.0.254/24
2020::254/128
eth1
192.168.30.254
3030::254/128
I'm trying to ping B's eth1 address from A, but it only works in IPv4,
in IPv6 it does not work, unless i put a route via eth3's address.
regards
Filipe
Alexander Samad wrote:
Hi
Sorry having a bit of a problem reading your diagram but is the
destination on the wire or is routed via box B
have you tried a tcpdump on B to see what it sees ?
A
On Mon, Sep 20, 2004 at 03:40:39AM +0100, filipe abrantes wrote:
hi and thanks for replying,
#ip r g 3030::254
3030::254 via 3030::254 dev eth0 src 2020::2 metric 0
cache mtu 1500 advmss 1440
Alexander Samad wrote:
what do you get when you try
ip r g 3030::254
A
On Mon, Sep 20, 2004 at 02:57:17AM +0100, filipe abrantes wrote:
* sorry for the other schema, it came out a mess. I hope
this one is
understandable.
hi:
I have this 2 boxes set up like this:
2020::2/128
2020::254/128 3030::254/128
192.168.0.2/24 192.168.0.254/24
192.168.30.254/24
+-------+ eth0
eth3
+-------+
| |======================= |
| eth1
| A
| | B
| ----
|
| |
|
+-------
+ +------
-+
A
# ip r l
192.168.30.254 dev eth0 scope link
192.168.0.0/24 dev eth0 scope link
169.254.0.0/16 dev lo scope link
127.0.0.0/8 dev lo scope link
# ip -6 r l
2020::254 dev eth0 metric 1024 mtu 1500 advmss 1440
3030::254 dev eth0 metric 1024 mtu 1500 advmss 1440
(...plus link local and multicast routes)
B
# ip r l
127.0.0.1 dev lo scope link
192.168.0.0/24 dev eth3 proto kernel scope link src
192.168.0.254
192.168.30.0/24 dev eth1 proto kernel scope link src
192.168.30.254
# ip -6 r l
2020::2 dev eth3 metric 1024 mtu 1500 advmss 1440
metric10 64
(...plus link local and multicast routes)
# cat /proc/sys/net/ipv4/ip_forward
1
#cat /proc/sys/net/ipv6/conf/all/forwarding
1
The problem is that i can ping 192.168.30.254 from A, but i
can't ping
3030::254 from A, anyone has a clue why this happens? Is
there any
feature i need to turn on or anything misconfigured? Why
does it work
for IPv4 but not for IPv6?
A -> B
# ping 192.168.30.254
PING 192.168.30.254 (192.168.30.254) 56(84) bytes of data.
64 bytes from 192.168.30.254: icmp_seq=0 ttl=64 time=0.175
ms
64 bytes from 192.168.30.254: icmp_seq=1 ttl=64 time=0.122
ms
#ping6 3030::254
PING 3030::254(3030::254) 56 data bytes
From ::1 icmp_seq=0 Destination unreachable: Address
unreachable
From ::1 icmp_seq=1 Destination unreachable: Address
unreachable
Regards
Filipe Abrantes
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