making sysctl tweaks more versatile and just reload sysctl settings

debian/wit-network-config.postinst

@@ -28,7 +28,6 @@ case "$1" in
         SWANCTLCONFIG="etc/swanctl/conf.d/wit-swanctl.conf"
         IPSECCONFIG="etc/ipsec.conf.wit"
         IPSECSECRETS="etc/ipsec.secrets"
-        SYSCTLTWEAKS="etc/sysctl.d/10-frr.conf"
         CAPATH="/etc/ipsec.d"
         CACURLURL="http://bastion"
 
@@ -416,11 +415,11 @@ case "$1" in
 
     ## START configuring services as we need it
 
+        sysctl --system
+
         systemctl enable strongswan || true       ## in case we kick-start or done have it enabled for some reason
         systemctl enable firewall
         systemctl restart firewall
-        
-        sysctl -p $SYSCTLTWEAKS
 
     ## END services section