Next Hop Analysis of BGP third parties

What is the next hop of a BGP third party? Compare the next hop of the route from which the router sends the route with the outgoing interface. If the route is in the same CIDR Block, the next hop of the route remains unchanged. Let's take a look at the following example: www.2cto.com R1, R2, and R3 routers. The interface IP addresses are 10.1.1.1/10.1.1.2 and 10.1.1.3 respectively. R1 and R2 run IBGP, R1 and R3 run EBGP, there is a loopback2 on R2 and the address is 22.22.22.22/24. Through BGP, where is the next hop of the route learned by R3 22? There are the following situations: www.2cto.com 1, R1, R2, and R3 build a neighbor through the loose. The next hop of the route learned by R3 22 is 1.1.1.12, R1, R2, and R3 build a neighbor through direct connection, the next hop of the route learned by R3 22 is 10.1.1.23, R1, and R2 build neighbors through the loopback port, and R1 and R3 build neighbors through direct connection, the next hop of the route learned by R3 is 10.1.1.24, R1, and R2. The next hop of the route learned by R3 is 1.1.1.1.