I changed openwrt opkg sources to a local mirror, but update fails.
when test with wget in terminal, it shows ssl certificate error.why?
wget https://mirrors.bfsu.edu.cn/openwrt/releases/21.02.0/targets/ath79/generic/packages/Pack
ages.gz
Downloading 'https://mirrors.bfsu.edu.cn/openwrt/releases/21.02.0/targets/ath79/generic/packages/Packages.gz'
Connecting to 2001:da8:20f:4435:4adf:37ff:fe55:2840:443
Connection error: Invalid SSL certificate