Finally got it solved.
It was a mixture of problems:
Problem 1: This one was spotted fast, I was using the same subnet in two different interfaces, and for some reason it worked for a while. Once I wanted to fix this, it wouldn’t fully reset.
I had to reset all interfaces and configure them again.
enp3s0 is down
enp6s0f0 & enp6s0f1 are a bond → subnet 30
enp6s0f2 → subnet 3
enp6s0f3 → subnet 80
Problem 2: The bond was working, but I had the static IP on one interface, not on the bond. Since it worked, maybe not totally correct, but was providing traffic exchange, I assume it was correct. Thanks for this one @WiteWulf
Now it finally works as expected.