Hi
I resolved this issue by disabling IPv6 on my Ubuntu 14.04 machine for Apache 2.4 as my server does not have a real IPv6 address.
To accomplish this, I explicitly set the IP address in /etc/apache2/ports.conf
Listen <IP>:80 Listen <IP>:443
and in all vhosts:
<VirtualHost <IP>:80>
instead of
<VirtualHost *:80>
After these changes, netstat -lnp | egrep ":443|:80"
shows tcp
in the first column instead of tcp6
.
Then, the cerbot renew
worked like a charm.
Best regards
Frederick Thomssen