rfc5482: initialize  TCP User Timeout Option with sys default
@@ -47,6 +47,7 @@ od_config_init(od_config_t *config)
config->keepalive = 15;
config->keepalive_keep_interval = 5;
config->keepalive_probes = 3;
+ config->keepalive_usr_timeout = 0; // use sys default
config->workers = 1;
config->resolvers = 1;
config->client_max_set = 0;
