A problem with too many network interfaces

[Attila Nagy]

Eric W.Bates wrote:
> I'm trying to build a router/filter on FreeBSD 4.8 with 4 real NIC and
> 32 vlan interfaces.
> Starting dhcpd generates an error after 15 interfaces:
> "[interface] not found"
> My C skills are lacking so while I'm grovelling thru dhcpd source to
> find the problem; I was wondering if anyone knows of a kernel limit I
> need to increase?
It has nothing to do with FreeBSD.
Take a look at common/discover.c to find the following code snippet:

void discover_interfaces (state)
         int state;
{
         struct interface_info *tmp, *ip;
         struct interface_info *last, *next;
         char buf [2048];
                   ^^^^
Increase the size of buf for example to 32768 and it will work.

-- 
Attila Nagy                                   e-mail: Attila.Nagy at fsn.hu
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