[nsp] ipv6 address ::X/128 on Cisco router

Stephen J. Wilcox steve at telecomplete.co.uk
Fri Jun 18 16:48:49 EDT 2004


On Fri, 18 Jun 2004, Ryan O'Connell wrote:

> >Cisco routers never had an "127.0.0.1" IPv4 loopback address either.  
> >
> >That's for hosts - what good would it do on a router?
> >  
> >
> 
> telnet 127.0.0.1 <line number + 2000> on a console router when all 
> physical interfaces are down for a start...
> 
> (I just assign 10.1.1.1 to loop0, annoyingly it won't let me assign 
> 127.0.0.1 to loop0...)

i thought (and cant find a link to confirm this so i may be wrong..) that 127/8 
is implicitly dropped on ingress as it is not a valid address for a router?

Steve



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