ERROR from ssh -v bane

network@newbrobox:~/linkies/bane$ ssh -v bane
OpenSSH_7.2p2 Ubuntu-4ubuntu2.4, OpenSSL 1.0.2g  1 Mar 2016
debug1: Reading configuration data /home/network/.ssh/config
debug1: /home/network/.ssh/config line 2: Applying options for bane
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 192.168.33.15 [192.168.33.15] port 22.
debug1: Connection established.
debug1: identity file ./networkkeypair type 1
debug1: key_load_public: No such file or directory
debug1: identity file ./networkkeypair-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.4
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.4
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.4 pat OpenSSH* compat 0x04000000
debug1: Authenticating to 192.168.33.15:22 as 'vagrant'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256@libssh.org
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:0qTApzrNVC1Qoi9pppZoxCkSTdGxpyOpAKD68B8KnZA
debug1: Host '192.168.33.15' is known and matches the ECDSA host key.
debug1: Found key in /home/network/.ssh/known_hosts:5
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: ./networkkeypair
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).

Vagrantfile:
Vagrant.configure("2") do |config|
config.vm.provision "file", source: "./networkkeypair.pub", destination: "networkkeypair.pub"
config.vm.provision "shell", inline: "cat networkkeypair.pub >> .ssh/authorized_keys"
config.ssh.username = "vagrant"
#config.ssh.password = "vagrant"
#config.ssh.keys_only = false
#config.ssh.verify_host_key = false
#config.ssh.insert_key = true
#config.ssh.host = "192.168.33.15"
config.ssh.dsa_authentication = false
#config.ssh.extra_args = "-p 22"
#config.ssh.private_key_path = "./networkkeypair"
config.vm.define "bane" do |bane|
  bane.vm.box = "ubuntu/xenial64"
  bane.vm.box_version = "20180316.0.0"
  bane.vm.network "private_network", ip: "192.168.33.15"
  end
end

Aaand my ssh-agent config
Host bane
     HostName 192.168.33.15
     User vagrant
     IdentityFile ./networkkeypair
     IdentitiesOnly yes
     StrictHostKeyChecking no