I have setup a HAProxy node ver 1.5.3 on Ubuntu 14.04. The Ubuntu server has 1 nic. The nic has an IPv6 address and an IPv4 address. The IPv6 listens on port 80 for incoming internetconnections. The Webserver is installed on a separate Windows IIS machine in the same VLAN with an IPv4 Address. No firewall. From the internet I can connect on port 80 to the IPV6 address so thats good. The HAProxy stats show that the the backend webserver is ok But still I cannot browse the website on the IPv4 server through the HAPRoxy. When I open my webbrowser I get an error in IE: "HTTP 400 Bad Request" I reinstalled Ubuntu, did not help. Im pulling my hair out on this. Someone please help.
Here's my config:
global
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
stats socket /run/haproxy/admin.sock mode 660 level admin
stats timeout 30s
user haproxy
group haproxy
daemon
# Default SSL material locations
ca-base /etc/ssl/certs
crt-base /etc/ssl/private
# Default ciphers to use on SSL-enabled listening sockets.
# For more information, see ciphers(1SSL).
# ssl-default-bind-ciphers kEECDH+aRSA+AES:kRSA+AES:+AES256:RC4-SHA:!kEDH:!LOW:!EXP:!MD5:!aNULL:!eNULL
defaults
log global
mode http
option httplog
option dontlognull
timeout connect 5000
timeout client 50000
timeout server 50000
errorfile 400 /etc/haproxy/errors/400.http
errorfile 403 /etc/haproxy/errors/403.http
errorfile 408 /etc/haproxy/errors/408.http
errorfile 500 /etc/haproxy/errors/500.http
errorfile 502 /etc/haproxy/errors/502.http
errorfile 503 /etc/haproxy/errors/503.http
errorfile 504 /etc/haproxy/errors/504.http
frontend localnodes
bind 0::0:80
mode http
default_backend nodes
backend nodes
mode http
balance roundrobin
# option forwardfor
# http-request set-header X-Forwarded-Port %[dst_port]
# http-request add-header X-Forwarded-Proto https if { ssl_fc }
# option httpchk HEAD / HTTP/1.1\r\nHost:localhost
server web01 192.168.40.100:80 check
listen stats *:1936
stats enable
stats uri /
stats hide-version
stats auth someuser:password