diff --git a/bin/startagent b/bin/startagent
index cbf77b4..c1d7e99 100755
--- a/bin/startagent
+++ b/bin/startagent
@@ -35,6 +35,7 @@ usage(){
                                     Just to be asked for password again, if you plugged off
                                     hardware-token and plugged it in again.
     --rm|--remove                   remove keys and token instead of adding them.
+    -R|--restart-agent
     -h|--info                       Show this info
 
 
@@ -103,7 +104,9 @@ set_and_load_identity_config() {
     if [ -e "${ssh_identity_dir}/config" ]; then
         logdebug "source ${ssh_identity_dir}/config"
         unset SSH_AUTH_SOCK SSH_AGENT_PID PKCS11_MODULE SSH_AGENT_ALLOW_FROM_REMOTE SSH_ADD_OPTION
+        set -a
         . "${ssh_identity_dir}/config"
+        set +a
     fi
 
 }
@@ -116,6 +119,8 @@ start_or_restart_local_agent() {
         logdebug "SSH_AUTH_SOCK: ${SSH_AUTH_SOCK:-not set}"
         logdebug "SSH_AGENT_PID: ${SSH_AGENT_PID:-not set}"
         logdebug "PKCS11_MODULE: ${PKCS11_MODULE:-not set}"
+        # kill ssh-agent when wanted from options
+        ${restartagent:-false} &&  ssh-agent -k
         for i in $(pgrep -f ${SSH_AUTH_SOCK})
         do
             logdebug "$(stat ${SSH_AUTH_SOCK})"
@@ -348,6 +353,10 @@ keyonly=false
 remove=false
 while :; do
     case $1 in
+        -r|--restart-agent)
+            restartagent=true
+            shift
+            ;;
         -c|--create-only)
             createonly=true
             shift
@@ -394,6 +403,7 @@ fi
 logdebug "              PKCS11_MODULE=${PKCS11_MODULE:-not set}"
 
 logdebug "            SSH_ADD_OPTIONS=${SSH_ADD_OPTIONS:-not set}"
+logdebug "          SSH_AGENT_OPTIONS=${SSH_AGENT_OPTIONS:-not set}"
 logdebug "SSH_AGENT_ALLOW_FROM_REMOTE=${SSH_AGENT_ALLOW_FROM_REMOTE:-false}"
 logdebug "              PKCS11_MODULE=${PKCS11_MODULE:-not set}"
 logdebug "                       P11M=${P11M:-not set}"