DHCP problem when online users more than 255

[bobyturk]

Hi, there!
hi . in 1 virtualhub i configured ip addresses list like this

192.168.30.2
192.168.31.255

when the online users reach the 255 session its mean 30s ip block is full and got ip from 31s block , the userswith 31 ip range are online but no data transfer ! how can i fix this ?

for example the user has ip 192.168.31.3 is online but cant get any data

[chipitsine]

a wild guess is that somehow network mask is /24
can you provide config ? logs ?

[bobyturk]

where do you mean ? in ubuntu server configuration or in softheter cirtual nat ? virtual nat has no option to set mas /24 or /32

[chipitsine]

I mean "Subnet mask" from https://www.softether.org/index.php?title=4-docs/1-manual/3._SoftEther_VPN_Server_Manual/3.7_Virtual_NAT_%26_Virtual_DHCP_Servers

[bobyturk]

this is my nat conf . i dont know how to chek subnet is /24 or /32

[chipitsine]

subnet mask "255.255.255.0" only allows 255 hosts.

it looks like SE VPN allows to make controversal configuration, i.e. 2 x 255 hosts with only 255 mask.

can you try adjusting mask to 255.255.254.0 ?

[bobyturk]

thank you ill test it . but i am using developer edition . SE versions dhcp has problem with more than 49 ip !

[chipitsine]

49 ip must be different story, probably originating to openvpn "net30" subnet.
anyway, please try not to mix everything in a sigle issue, as we'll soon will stop understand what's going on.

feel free to open dedicated issue for that

[chipitsine]

by "SE VPN" I mean development edition SoftEther VPN

[chipitsine]

let's keep it open.
I wish to address mask validation check in UI

[bobyturk]

thank you , finally i could test subnet mask you gave me . the problem completly solved by using this subnet mask , even in stable edition when using this subnet you can got more online users , but i didnt test it in cascade and tunnel mode , just using in one softether server and number of online users has no limit