Does the Big-IP use its management IP address to query the internet for F5 updates?

I'm seeing my F5 try to query the internet to check for updates after I manually pressed "Check Now" from the update check page. It's currently trying to reach out to the internet from its Self-IP, not the management address.

Should the F5 being using its Self-IP by default to query that update server out in the internet or should it be using its management IP address?

I ask because I currently have a static default route on the F5 that says if you're going to 0.0.0.0, take your default gateway at 10.251.12.1 (the default gateway for the Self-IP).

Is this why it's trying to source the request from that address or would it be doing it by default anyway even if I didn't have that default route set?