Hi,
Please go through the RFC excerpts below and answer the query in the end.
RFC 4862
========
5.5.2. Absence of Router Advertisements
Even if a link has no routers, the DHCPv6 service to obtain
addresses
may still be available, and hosts may want to use the service. From
the perspective of autoconfiguration, a link has no routers if no
Router Advertisements are received after having sent a small number
of Router Solicitations as described in [RFC4861].
Note that it is possible that there is no router on the link in this
sense, but there is a node that has the ability to forward packets.
In this case, the forwarding node's address must be manually
configured in hosts to be able to send packets off-link, since the
only mechanism to configure the default router's address
automatically is the one using Router Advertisements.
RFC 4861
=========
6.3.7. Sending Router Solicitations
...
Once the host sends a Router Solicitation, and receives a valid
Router Advertisement with a non-zero Router Lifetime, the host MUST
desist from sending additional solicitations on that interface,
until
the next time one of the above events occurs. Moreover, a host
SHOULD send at least one solicitation in the case where an
advertisement is received prior to having sent a solicitation.
Responses to solicited advertisements may contain more information
than unsolicited advertisements.
If a host sends MAX_RTR_SOLICITATIONS solicitations, and receives no
Router Advertisements after having waited MAX_RTR_SOLICITATION_DELAY
seconds after sending the last solicitation, the host concludes that
there are no routers on the link for the purpose of [ADDRCONF].
However, the host continues to receive and process Router
Advertisements messages in the event that routers appear on the
link.
Query :
If a host sends MAX_RTR_SOLICITATIONS solicitations, and receives
"no
Router Advertisements" after having waited
MAX_RTR_SOLICITATION_DELAY
Here "no Router Advertisements" Is it means, RA with Non-zero
lifetime or RA with zero lifetime ?
Love,
Sandeep
****************************************************************************
****************************
This e-mail and attachments contain confidential information from HUAWEI,
which is intended only for the person or entity whose address is listed
above. Any use of the information contained herein in any way (including,
but not limited to, total or partial disclosure, reproduction, or
dissemination) by persons other than the intended recipient's) is
prohibited. If you receive this e-mail in error, please notify the sender by
phone or email immediately and delete it!
--------------------------------------------------------------------
IETF IPv6 working group mailing list
[email protected]
Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------
