I have been spending a lot of time for the past cpl of days figuring out what's wrong with my apache. Our website is up and running fine with http. Now, we want to enable https (using self signed certs) for some internal testing. However, when try to enable https, http fails to start with the following message(s):
[Thu Mar 12 00:57:06.392414 2015] [core:crit] [pid 35735] (22)Invalid argument: AH00069: make_sock: for address [::]:443, apr_socket_opt_set: (IPV6_V6ONLY)
(98)Address already in use: AH00072: make_sock: could not bind to address [::]:443
(98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:443
[Thu Mar 12 00:57:06.392522 2015] [mpm_prefork:alert] [pid 35735] no listening sockets available, shutting down
I checked that there is no other process is using 443 before starting apache. I also checked that there are no multiple config files using 443. Infact I did try to change the ssl port to something else and start apache, but apache doesn't start.
Need your help identifying the issue.