Node with encryption asking for ID in loop

[Anduril]

Hey there,

I hope someone can help. I have a simple test setup with only one gateway and one node at the moment. I want them to communication with encryption enabled. As one of them has no easy access to serial lines I want to first set it up with #define MY_ENCRYPTION_SIMPLE_PASSWD "Test" I have this activated in both sketches.
The result is the node asking for an ID in loop all the time, but with different sensor numbers (why is there a sensor number in the ID_REQUEST, shouldn't it be 255?). But there is a pattern (tried multiple time with reboot on node and gateway), so it's not random... first I see 6 requests for ID with sensor 102, followed by sensor 4, 163, 67, 12, 176 (6 times each). My controller (MYSController) answers them all the time and I see the sending messages in the serial console of the gateway...
here the complete gateway log:

dhcp client start...
ip:192.168.38.131,mask:255.255.255.0,gw:192.168.38.1
7778 GWT:TIN:CONNECTING...
7939 GWT:TIN:IP: 192.168.38.131
7973 MCO:BGN:STP
7991 MCO:BGN:INIT OK,TSP=1
8019 TSM:READY:NWD REQ
8048 ?TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=20,pt=0,l=0,sg=0,ft=0,st=OK:
pm open,type:2 0
107269 GWT:TSA:C=0,CONNECTED
186214 TSF:MSG:READ,255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
186278 TSF:MSG:BC
186297 TSF:MSG:FPAR REQ,ID=255
186329 TSF:PNG:SEND,TO=0
186355 TSF:CKU:OK
186374 TSF:MSG:GWL OK
186431 ?TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
202842 TSF:MSG:READ,255-255-0,s=102,c=3,t=3,pt=0,l=0,sg=0:
202912 GWT:RFC:C=0,MSG=255;102;3;0;4;2
202958 ?TSF:MSG:SEND,0-0-255-255,s=102,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
204480 TSF:MSG:READ,255-255-0,s=102,c=3,t=3,pt=0,l=0,sg=0:
204546 GWT:RFC:C=0,MSG=255;102;3;0;4;2
204592 ?TSF:MSG:SEND,0-0-255-255,s=102,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
206120 TSF:MSG:READ,255-255-0,s=102,c=3,t=3,pt=0,l=0,sg=0:
206187 GWT:RFC:C=0,MSG=255;102;3;0;4;2
206233 ?TSF:MSG:SEND,0-0-255-255,s=102,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
207760 TSF:MSG:READ,255-255-0,s=102,c=3,t=3,pt=0,l=0,sg=0:
207826 GWT:RFC:C=0,MSG=255;102;3;0;4;2
207872 ?TSF:MSG:SEND,0-0-255-255,s=102,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
209399 TSF:MSG:READ,255-255-0,s=102,c=3,t=3,pt=0,l=0,sg=0:
209467 GWT:RFC:C=0,MSG=255;102;3;0;4;2
209512 ?TSF:MSG:SEND,0-0-255-255,s=102,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
211041 TSF:MSG:READ,255-255-0,s=102,c=3,t=3,pt=0,l=0,sg=0:
211108 GWT:RFC:C=0,MSG=255;102;3;0;4;2
211153 ?TSF:MSG:SEND,0-0-255-255,s=102,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
229260 TSF:MSG:READ,255-255-0,s=4,c=3,t=3,pt=0,l=0,sg=0:
229325 GWT:RFC:C=0,MSG=255;4;3;0;4;2
229369 ?TSF:MSG:SEND,0-0-255-255,s=4,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
230903 TSF:MSG:READ,255-255-0,s=4,c=3,t=3,pt=0,l=0,sg=0:
230968 GWT:RFC:C=0,MSG=255;4;3;0;4;2
231012 ?TSF:MSG:SEND,0-0-255-255,s=4,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
232543 TSF:MSG:READ,255-255-0,s=4,c=3,t=3,pt=0,l=0,sg=0:
232608 GWT:RFC:C=0,MSG=255;4;3;0;4;2
232652 ?TSF:MSG:SEND,0-0-255-255,s=4,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
234183 TSF:MSG:READ,255-255-0,s=4,c=3,t=3,pt=0,l=0,sg=0:
234250 GWT:RFC:C=0,MSG=255;4;3;0;4;2
234294 ?TSF:MSG:SEND,0-0-255-255,s=4,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
235823 TSF:MSG:READ,255-255-0,s=4,c=3,t=3,pt=0,l=0,sg=0:
235890 GWT:RFC:C=0,MSG=255;4;3;0;4;2
235934 ?TSF:MSG:SEND,0-0-255-255,s=4,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
237463 TSF:MSG:READ,255-255-0,s=4,c=3,t=3,pt=0,l=0,sg=0:
237530 GWT:RFC:C=0,MSG=255;4;3;0;4;2
237573 ?TSF:MSG:SEND,0-0-255-255,s=4,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
255671 TSF:MSG:READ,255-255-0,s=163,c=3,t=3,pt=0,l=0,sg=0:
255740 GWT:RFC:C=0,MSG=255;163;3;0;4;2
255786 ?TSF:MSG:SEND,0-0-255-255,s=163,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
257312 TSF:MSG:READ,255-255-0,s=163,c=3,t=3,pt=0,l=0,sg=0:
257379 GWT:RFC:C=0,MSG=255;163;3;0;4;2
257425 ?TSF:MSG:SEND,0-0-255-255,s=163,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
258952 TSF:MSG:READ,255-255-0,s=163,c=3,t=3,pt=0,l=0,sg=0:
259022 GWT:RFC:C=0,MSG=255;163;3;0;4;2
259067 ?TSF:MSG:SEND,0-0-255-255,s=163,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
260592 TSF:MSG:READ,255-255-0,s=163,c=3,t=3,pt=0,l=0,sg=0:
260660 GWT:RFC:C=0,MSG=255;163;3;0;4;2
260705 ?TSF:MSG:SEND,0-0-255-255,s=163,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
262234 TSF:MSG:READ,255-255-0,s=163,c=3,t=3,pt=0,l=0,sg=0:
262301 GWT:RFC:C=0,MSG=255;163;3;0;4;2
262346 ?TSF:MSG:SEND,0-0-255-255,s=163,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
263875 TSF:MSG:READ,255-255-0,s=163,c=3,t=3,pt=0,l=0,sg=0:
263944 GWT:RFC:C=0,MSG=255;163;3;0;4;2
263990 ?TSF:MSG:SEND,0-0-255-255,s=163,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
282098 TSF:MSG:READ,255-255-0,s=67,c=3,t=3,pt=0,l=0,sg=0:
282165 GWT:RFC:C=0,MSG=255;67;3;0;4;2
282210 ?TSF:MSG:SEND,0-0-255-255,s=67,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
283735 TSF:MSG:READ,255-255-0,s=67,c=3,t=3,pt=0,l=0,sg=0:
283803 GWT:RFC:C=0,MSG=255;67;3;0;4;2
283848 ?TSF:MSG:SEND,0-0-255-255,s=67,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
285377 TSF:MSG:READ,255-255-0,s=67,c=3,t=3,pt=0,l=0,sg=0:
285443 GWT:RFC:C=0,MSG=255;67;3;0;4;2
285488 ?TSF:MSG:SEND,0-0-255-255,s=67,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
287018 TSF:MSG:READ,255-255-0,s=67,c=3,t=3,pt=0,l=0,sg=0:
287085 GWT:RFC:C=0,MSG=255;67;3;0;4;2
287129 ?TSF:MSG:SEND,0-0-255-255,s=67,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
288659 TSF:MSG:READ,255-255-0,s=67,c=3,t=3,pt=0,l=0,sg=0:
288725 GWT:RFC:C=0,MSG=255;67;3;0;4;2
288770 ?TSF:MSG:SEND,0-0-255-255,s=67,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:2
290300 TSF:MSG:READ,255-255-0,s=67,c=3,t=3,pt=0,l=0,sg=0:
290366 GWT:RFC:C=0,MSG=255;67;3;0;4;2

If I set the node ID in sketch, it seems to play "ping-pong" all the time... I don't understand why...

953628 TSF:MSG:READ,10-10-0,s=255,c=3,t=24,pt=1,l=1,sg=0:1
953689 TSF:MSG:PINGED,ID=10,HP=1
954954 !TSF:MSG:SEND,0-0-10-10,s=255,c=3,t=25,pt=1,l=1,sg=0,ft=0,st=NACK:1
955267 TSF:MSG:READ,10-10-0,s=255,c=3,t=24,pt=1,l=1,sg=0:1
955328 TSF:MSG:PINGED,ID=10,HP=1
956593 !TSF:MSG:SEND,0-0-10-10,s=255,c=3,t=25,pt=1,l=1,sg=0,ft=0,st=NACK:1
956906 TSF:MSG:READ,10-10-0,s=255,c=3,t=24,pt=1,l=1,sg=0:1
956967 TSF:MSG:PINGED,ID=10,HP=1
958232 !TSF:MSG:SEND,0-0-10-10,s=255,c=3,t=25,pt=1,l=1,sg=0,ft=0,st=NACK:1
958545 TSF:MSG:READ,10-10-0,s=255,c=3,t=24,pt=1,l=1,sg=0:1
958607 TSF:MSG:PINGED,ID=10,HP=1
959871 !TSF:MSG:SEND,0-0-10-10,s=255,c=3,t=25,pt=1,l=1,sg=0,ft=0,st=NACK:1
976723 TSF:MSG:READ,10-10-0,s=255,c=3,t=24,pt=1,l=1,sg=0:1
976784 TSF:MSG:PINGED,ID=10,HP=1
978048 !TSF:MSG:SEND,0-0-10-10,s=255,c=3,t=25,pt=1,l=1,sg=0,ft=0,st=NACK:1
978361 TSF:MSG:READ,10-10-0,s=255,c=3,t=24,pt=1,l=1,sg=0:1
978423 TSF:MSG:PINGED,ID=10,HP=1
979687 !TSF:MSG:SEND,0-0-10-10,s=255,c=3,t=25,pt=1,l=1,sg=0,ft=0,st=NACK:1