There are several possible IP addresses that are assigned to an instance but the primary private IP address will not change. See this, Amazon EC2 instance IP addressing .
A private IPv4 address, regardless of whether it is a primary or secondary address, remains associated with the network interface when the instance is stopped and started, or hibernated and started, and is released when the instance is terminated.
Does the IP address created for PrivateLink Interface Endpoint can change?Accepted Answerasked 4 years ago
convert Dynamic IP address to Static IPasked 3 years ago
ENI and public IP addressasked 4 years ago
Private IP address change, effect(s)?asked 2 years ago
dynamic ip addressasked 8 months ago
Unable to access EC2 Instance over the Public IP Addressasked 3 months ago
Amazon MQ (RabbitMQ): Is the IP address of the endpoint static or dynamic?asked 21 days ago
Change of sending IPasked 2 months ago
About dynamic change of IP address
About dynamic change of IP address when using ELB