Is there a limit in pool size of pptp-server.
I try to use /23 size pool but internet via pptp stop, with /24 is ok
any example
Do you use the pool for local-address or remote-address?
Doesn’t the /23 pool overlap with some other address space you use?
no overlap
set interface ip
192.168.100.1/23
local-address 192.168.100.2-254
remote-address 192.168.101.2-254
in moment
interface ip
192.168.100.1/24
local-address 192.168.100.2-128
remote-address 192.168.100.129-254
but 125 ip’s not enough need one C subnet 253 ip’s
What interface do you address with 192.168.100.1/23?
Do you use PPTP tunnels to connect customers?
Paste the output of:
/interface print
/ip address print
router have only one lan interface
take via dhcp default route to internet
clients connect also to this interface
/interface print
Flags: D - dynamic, X - disabled, R - running, S - slave
# NAME TYPE MTU L2MTU MAX-L2MTU
0 R LAN ether 1500 16383 16383
/ip address pr
Flags: X - disabled, I - invalid, D - dynamic
# ADDRESS NETWORK INTERFACE
0 192.168.100.1/23 192.168.100.0 LAN
1 D 192.168.88.248/24 192.168.88.0 LAN < to internet
it work now but pool is to small
Set the local-address and remote-address pool to something completely different, for example:
local-address 172.16.105.0/24.
remote-address 172.16.205.0/24
Addresses in pptp can and should be from completely different subnet, than interface address.
agree, but in my case not work
maby mascarading is problem?
/ip firewall nat
add action=masquerade chain=srcnat comment="VPN NAT" disabled=no out-interface=l2tp-INET src-address=192.168.100.0/23
also mark with
/ip fi ma
add action=mark-routing chain=prerouting comment=L2TP disabled=no dst-address-list="!Local subnet" new-routing-mark=for_VPN passthrough=yes src-address=192.168.100.0/23
to make clents to go via L2TP interface to internet
Oh, so there’s more config than just the PPTP? 
Basically, you have had overlapping addresses - LAN interface address overlapped with remote and local addresses in PPTP.
I guess you should fix the overlapping the way I suggested in the previous post and then change src-address in the masquerade and mangle rules to the 172.16.205.0/24 subnet.
no overlapping, because no one get ip with is on router, it is out of range of pools.