DHCP ip allocation to client is slow

[suddhasilsarkar]

Hi There and team,
If any one can guide me here please. I am setting up 300 tunnels to softethervpn server running on AWS/EC2(16vCPU , 32 GB RAM and 50Gbps network throughput). I am using local bridge networking and DNSMASQ for the DHCP ip allocation to client. What I have have been observing is , for 300 connection I get ip allocated for 280-290, now if I try to connect 500 connection i see around 470-490 getting connection established. I see lots of retry and disconnect with "auth failed" message but actually in the log its showing unable to get ip from dhcp.
Now I am using openvpn client to conenct to softether over tcp 1194. I am using openvpn because certain limitation in application /client side.

Now with this I am wondering if there is any tuning I need to perform ? Any thought please ?

[suddhasilsarkar]

This has been fixed, hence closing this thread. Just had to adjust parameter in dnsmasq config :

dhcp-rapid-commit # NEW - Fast DHCP
no-ping