> Depending on your distribution use oldstable, stable or unstable instead of > testing. Reason: broken libc. > Obtain the key: wget -O - https://net2o.de/be...@net2o.de-yubikey.pgp.asc | > apt-key add - > deb [arch=i386,amd64,armhf,armel,arm64,powerpc,mips,mipsel,all] https:// > net2o.de/debian testing main
I'm afraid apt-key has been deprecated for security and other reasons. A good guide to "upgrading" would be https://www.linuxuprising.com/2021/01/apt-key-is-deprecated-how-to-add.html ~ Hendursaga
