Allow connecting to servers that have multiple CNAME records
Allow connecting to servers that have multiple CNAME records

Connecting to irc.freenode.net was not possible as resolving this FQDN only
returns a list of CNAME records. Verifying that the IP-address is indeed one of
the returned CNAME records seems to fix this.

Signed-off-by: Niels de Vos <a802a5730c0da02a06106670cc12c7838c6e90dc@nixpanic.net>

nigeljonez/newpyfibot