root@vuultimo:/etc# grep -r "ip addr flush" * udhcpc.d/50default: ip addr flush dev $interface wpa_supplicant/functions.sh: ip addr flush dev "$WPA_IFACE" 2>/dev/null
After adding "scope global", the problem is gone. Not sure if the change is needed in wpa_supplicant functions.sh, but I added it anyway. (I'm on wired)