Confused on NAT

Heres the current situation:

ETHER1 - WAN INTERFACE - 124.XX.XX.XXX

ETHER2 - PPPOE INTERFACE - 10.10.10.1/24

I HAVE A NAT RULE : ACTION = MASQUERADE, CHAIN = SRCNET, SRCADDRESS = 10.10.10.0/24.

So all my client going to whatismyip.com get an ip of my wan interface: 124.xx.xx.xxx


This is what I want now:

Now I have LIVE IPS and want all my clients to get a Live IP. So I changed the ETHER2.

ETHER2 - PPPOE INTERFACE - 125.10.XX.XXX/24

So should I remove the NAT RULE OR WHAT SHOULD I CHANGE IT TO?


Regards

As you have src-address specified for NAT rule, it should not make any effect to public IP address for clients connected on Ether2.