To install packages supporting https:
opkg update
opkg install -d usb ca-certificates openssl-util ca-bundle
opkg install -d usb libustream-mbedtls
wget works fine for https.
url="https://saimei.ftp.acc.umu.se/debian-cd/current/amd64/iso-dvd/debian-10.9.0-amd64-DVD-1.iso"
wget $url
Downloading 'https://saimei.ftp.acc.umu.se/debian-cd/current/amd64/iso-dvd/debian-10.9.0-amd64-DVD-1.iso'
Connecting to 2001:6b0:19::138:443
Writing to 'debian-10.9.0-amd64-DVD-1.iso'
Check curl.
curl -o debian.iso $url
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
curl: (77) Error reading ca cert file /etc/ssl/certs/ca-certificates.crt - mbedTLS: (-0x3E00) PK - Read/write of file failed
Why wget works fine instead of curl?How to support curl then?