Re: increase the number of routing tables

[Jan Engelhardt <jengelh@xxxxxxxxxx>]

On Monday 2012-01-30 17:14, Stephen Hemminger wrote:

>> >> > There are 2147483647.
>> >> 
>> >> Any reason why it's not an unsigned 32bit int? (surely there is a corner 
>> >> case where this is useful...)
>> >
>> >The 8 bit value is enshrined in the API for 'struct rtmsg' and therefore
>> >increasing it would break existing applications. 
>> 
>> Actually, what Ed (and me too) was wondering about was:
>> 
>> why does `ip route show table $[0x80000000]` not print an empty table, 
>> i.e. where is it that some code uses int/s32 during parsing of 
>> the argument and/or the RTA_TABLE attribute?
>
>There are lots of places internally in ip utilities that use u32
>for route table. But the route input/output message format is still limited
>to 8 bits.

But then, adding a rule to table 258 would make it show up in table 2 as 
well, which is not the case.
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