Hi Harald,
I think it's not the best idea to re-use the same port numbers / port number range on the MS side which are used on the network side. Is there any requirement to do so? why not simply shift the entire base port (5700) on the client side to something else like 6700?
There is and was no requirement. I didn't expect this problem during the initial development process of trxcon, but then also started to think about changing the default port range.
So, I definitely agree with you and 6700 is fine for me. I've already updated your change to use it:
https://gerrit.osmocom.org/#/c/6839/
With best regards, Vadim Yanitskiy.