PPPoE Max Tunnels

[John Oxley]

I hope this is the right place to post.

I'm having a problem with my PPPoE server in that it refuses to create
more than 30 tunnels.

net 10.42.73.38 --> xxx.xx.xxx.xx netmask 0xffffffff 
        Opened by PID 2534
tun31: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
tun32: flags=8010<POINTOPOINT,MULTICAST> mtu 1500

Are there any limits by default in the kernel that say you can only
create 32 tunnels, or could it be in the ppp.conf or pppoe setup
somewhere.

TIA,

-John