ip6-localhost (::1) 2990.86 ms !H -> Why ?

[Pekka Savola]

On Sun, 18 Nov 2001, Pekka Savola wrote:
> On Sun, 18 Nov 2001, NDSoftware wrote:
> 
> Ok, these pings look sane.

The problem here was very probably that:

1) router (2.2.x kernel) had been configured with:

CONFIG_IPV6

2) woody (2.4.x) kernel had been configured with: [didn't work]

CONFIG_IPV6
 which for 2.4.x, x > 4 or so, effectively means:
CONFIG_IPV6_EUI64
CONFIG_IPV6_NO_PB

3) potato (2.2.18) kernel had been configured with:

CONFIG_IPV6
CONFIG_IPV6_EUI64 (possibly)

So, in effect the router was only using provider-based addresses, and 
PB addressing had been removed from Woody as obsolete.  Potato was still 
working because the support appears to have not been removed yet.

The problem could be noted by checking which solicited-node multicast 
addresses had been joined (netstat -g).

Rebooting 'router' to a kernel with EUI64 support fixed the problem.

-- 
Pekka Savola                 "Tell me of difficulties surmounted,
Netcore Oy                   not those you stumble over and fall"
Systems. Networks. Security.  -- Robert Jordan: A Crown of Swords