>> Which one of the following you think that are simply wrong
>> to have such that they can introduce bugs?
>>
>>     
>
> - if we want to have an admin knob to fix up the ttl to handle
>   problem apps (and the admin really cannot fix/kill the problem
>   app itself!) why isn't one ttl tunable (for ip) enough? What does 
>   it mean to provide ndd tunable for tcp_def_ttl, ip_def_ttl (which
>   is really icmp_err_ttl) and icmp_def_ttl (which is really raw ip ttl)?
>   And what does it mean to provide  a tunable for ipv6 unicast hops?
>   

isn't it solving the issue of having one 'big button' for the entire 
host.. having a tunable per 'ulp' at least narrows down the 
effect/change to respective protocol apps.. by having one tunable for 
entire host aren't we again talking of 'big button' aka effecting all 
the other apps.

Further HP-Ux has tcp_def_ttl, udp_def_ttl, ip_def_ttl and rawip_def_ttl 
tunnables. Strange thing is they have a separate tunable for raw IP.

~Girish



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