I am using haproxy version 1.6.3 and my server is defined using dns.
It is an ELB in amazon web services so it changes IP addresses frequently and
that functionality seems to work fine.
However, if I delete the DNS entry, the server is not marked down. It then
keeps sending traffic to the IP address that existed before the DNS entry was
deleted.
resolvers dns
nameserver AmazonDNS 169.254.169.253:53
hold valid 1s
frontend search
bind :80
default_backend blue
backend blue
server blue elbname.amazon.net:80 resolvers dns check inter 1000
