I've consulted the spec https://www.ietf.org/rfc/rfc2328.txt and have googled to the end of the internet but I'm confused on OSPF Point-To-Point.

If I have the following:

 Link State ID: 4.4.4.4 Advertising Router: 4.4.4.4 

And then in my Router-LSA Update I have the following:

 (Link ID) Neighboring Router ID: 2.2.2.2 (Link Data) Router Interface address: 10.0.1.1 Number of TOS metrics: 0 TOS 0 Metrics: 64 

I know this means that OSPF Router 4.4.4.4 has a point-to-point connection to 2.2.2.2 via the interface 10.0.1.1 However, my question is as follows: Does the 10.0.1.1. interface reside on the 4.4.4.4 router or the 2.2.2.2 router?