Created attachment 634748 [details] emerge --info Unable to login with public key authentification whith USE="hpn"
Can you give some ssh -vvvv logs? bug 708224 may be relevant.
~$ ssh -v cafe.nainwak.org OpenSSH_6.7p1 Debian-5+deb8u8, OpenSSL 1.0.1t 3 May 2016 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to cafe.nainwak.org [2a01:e0a:20a:f190::1] port 22. debug1: connect to address 2a01:e0a:20a:f190::1 port 22: Connection timed out debug1: Connecting to cafe.nainwak.org [82.64.86.65] port 22. debug1: Connection established. debug1: identity file /home/local/tereutes/.ssh/id_rsa type 1 debug1: key_load_public: No such file or directory debug1: identity file /home/local/tereutes/.ssh/id_rsa-cert type -1 debug1: identity file /home/local/tereutes/.ssh/id_dsa type 2 debug1: key_load_public: No such file or directory debug1: identity file /home/local/tereutes/.ssh/id_dsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/local/tereutes/.ssh/id_ecdsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/local/tereutes/.ssh/id_ecdsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/local/tereutes/.ssh/id_ed25519 type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/local/tereutes/.ssh/id_ed25519-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.7p1 Debian-5+deb8u8 debug1: Remote protocol version 2.0, remote software version OpenSSH_8.2p1-PKIXSSH-12.4.3-hpn14v20 PKIX[12.4.3] debug1: match: OpenSSH_8.2p1-PKIXSSH-12.4.3-hpn14v20 PKIX[12.4.3] pat OpenSSH* compat 0x04000000 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr umac-64-etm@openssh.com none debug1: kex: client->server aes128-ctr umac-64-etm@openssh.com none debug1: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ECDSA 60:6c:01:81:8c:31:a1:4f:f7:db:96:f4:75:48:77:ff debug1: Host 'cafe.nainwak.org' is known and matches the ECDSA host key. debug1: Found key in /home/local/tereutes/.ssh/known_hosts:11 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /home/local/tereutes/.ssh/id_rsa debug1: Authentications that can continue: publickey debug1: Offering DSA public key: /home/local/tereutes/.ssh/id_dsa debug1: Authentications that can continue: publickey debug1: Trying private key: /home/local/tereutes/.ssh/id_ecdsa debug1: Trying private key: /home/local/tereutes/.ssh/id_ed25519 debug1: No more authentication methods to try. Permission denied (publickey).
I don't think sys-libs/glibc-2.31 is relevant, I got this bug since first opensssh-8.1 but didn't take the time too fill the bug
Can you provide verbose logs from the server side? Running "sshd -d" should output verbose debug logs to the console (WARNING, you will have to stop the service to do this, and it it will terminate after a connection, so make sure to restart the sshd service before disconnecting).
