Connection reset by peer on main node

I am getting this on my debug log :

2016-10-28 18:07:47 socket recv error Connection reset by peer (104)
2016-10-28 18:07:51 connect() to [2a01:4f8:201:7489::2]:8233 failed: Network is unreachable (101)

my config :

addnode=mainnet.z.cash
rpcuser=username
rpcpassword=head -c 32 /dev/urandom | base64
gen=1
genproclimit=$(nproc)
equihashsolver=tromp

Do somebody knows what is going on ?