Hi community, We have batman-adv mesh network of 136 nodes perfectly running for about 6 months. Our configure is: - OpenWRT tag 15.05.1 - wpa_supplicant hostap_2_4 - 802.11 IBSS - proto=WPA2 - key_mgmt=WPA-PSK - pairwise=CCMP - group=CCMP The minor issue we have is that memory is fragmented after running 6 months for a large network of 136 nodes. I am speculating that it is because of the periodical RNSA  reauthentication. If I read 802.11 spec "11.5.10 RSNA authentication in an IBSS" correctly, there is reauth timer.  Is dot11RSNAConfigPMKLifetime in wpa_supplicant.conf the setting for the reauthentication timer? The default value is 43200 (12 hours). What about I change this value to be 2 weeks or a year? Thanks. Xuebing Wang