I told bitcoin.conf to use 5.135.180.85 but now bitcoind makes connections on a totally other IP-Address.

I don't want bitcoind to use IPs other than 5.135.180.85.
Is that on purpose?
I told bitcoin.conf to use 5.135.180.85 but now bitcoind makes connections on a totally other IP-Address.

I don't want bitcoind to use IPs other than 5.135.180.85.
Is that on purpose?
The bind option specifies the ip bitcoind listen's on and according to your screenshot it works as expected. The ip address that is used for outgoing connections is your primary ip address, again, as expected. You can change that with some linux magic.
Nothing works as expected here. 91.121... is not my primary IP and now bitcoind even uses 5.135... for outgoing connections.