On Wed, 14 Apr 2010, Parav Pandit wrote:
Hi,
In IPv6 stack implementation,
How IPv6 stack should select the outgoing interface to choose (when multiple
interfaces) are available?
Typically when the destination is the link-local address which may be on-link
on both the interfaces (before
the neighbor discovery) is done?
Should IPv6 stack do Neighbor discovery on all multiple interfaces in the host?
Which RFC defines this behavior? I referred RFC 3484 (Default Address Selection
for IPv6) but doesn't seem to
define this.
I hope I am asking on the right mailing list. If not please divert me to the
correct one.
The application should know which interface/link to choose in case of
link-local address. The link-local is relevant to a specific link only.
e.g.
ping6 -I bge0 fe80::21b:63ff:fe9f:4527
PING6(56=40+8+8 bytes) fe80::206:5bff:fef2:41c1%bge0 -->
fe80::21b:63ff:fe9f:4527
16 bytes from fe80::21b:63ff:fe9f:4527%bge0, icmp_seq=0 hlim=64 time=7.292
ms
16 bytes from fe80::21b:63ff:fe9f:4527%bge0, icmp_seq=1 hlim=64 time=0.656
ms
^C
--- fe80::21b:63ff:fe9f:4527 ping6 statistics ---
2 packets transmitted, 2 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 0.656/3.974/7.292/3.318 ms
ping6 fe80::21b:63ff:fe9f:4527
ping6: UDP connect: Network is unreachable
If the application knows which link to use then IPv6 protocol stack might
use ND to dicover/reach the node.
Best Regards,
Janos Mohacsi
--------------------------------------------------------------------
IETF IPv6 working group mailing list
[email protected]
Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------
