centOS8.5 安装python3.8.9报错：yum install db4-devel libpcap-devel

需要安装的其它库都OK了，就剩这两个怎么都不行，我各种百度也找不到办法。

[root@root ~]# yum install db4-devel libpcap-devel
Repository AppStream is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository epel is listed more than once in the configuration
Last metadata expiration check: 0:24:10 ago on Thu 24 Feb 2022 03:25:33 PM CST.
No match for argument: db4-devel
No match for argument: libpcap-devel
Error: Unable to find a match: db4-devel libpcap-devel

弄好EPEL源，按道理 libpcap-devel 有才对，弄好基础源和EPEL源，但 db4-devel 没怎么见过，没的话，去包网站找，自己安装