<P>
Hi,<BR>
<BR>
I have two doubts with IPv6 protocol (RFC 2461 and R=

FC 2462)<BR>
<BR>
1. If the advertized router lifetime (in RA message) =

has expired <BR>
and the host don't have any other routers in defalult<BR=

>
router list, what is the next action taken by the host? does it <BR>
=

starts sending RS message again?<BR>
<BR>
2. if the advertized valid li=

fetime( in Prefix option in RA <BR>
message) expires for the prefix store=

d at host. what happens to the<BR>
address derived by this prefix? does t=

he host again starts sending<BR>
RS to receive new prefixes (or to update=

 the valid lifetime), if it<BR>
has only one prefix in its prefix list?<B=

R>
<BR>
<BR>
Thanks for your response in advance<BR>
<BR>
Pramend=

ra Singh<BR>
L&amp;T Infotech Ltd<BR>

</P>
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