1, Security and Privacy: Different softwares involve different personal information and privacy data. Logging in multiple softwares with the same IP address will increase the security risk, because if the security of one of the softwares is threatened, the attacker will get the account information of other softwares under that IP address. Using different IP addresses to log in to the software can reduce the risk of security vulnerabilities and protect the safety of personal information.

2. Usage restriction and prohibition: Some software will restrict multiple accounts with the same IP address from logging in at the same time, or prohibit frequent login of different accounts with the same IP address. Such restrictions and prohibitions are designed to prevent malicious acts and account abuse. If you use the same IP address to log in to multiple softwares, these restrictions and shielding measures will be triggered, resulting in the account not being used normally or being blocked.