--- zzzz-none-000/linux-3.10.107/net/ipv4/tcp_ipv4.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/net/ipv4/tcp_ipv4.c	2021-11-10 11:53:56.000000000 +0000
@@ -2951,6 +2951,7 @@
 		*per_cpu_ptr(net->ipv4.tcp_sk, cpu) = sk;
 	}
 	net->ipv4.sysctl_tcp_ecn = 2;
+	net->ipv4.sysctl_tcp_min_snd_mss = TCP_MIN_SND_MSS;
 	return 0;
 
 fail: