I'm using nginx inside a docker container.
A lot of entries in the access_log show
172.23.0.1 as the source IP address, only a few show plausible IPs.
ifconfig shows that this is the IP address of an interface called
br-d12e89b962b7 Link encap:Ethernet HWaddr 01:42:49:df:46:b6
inet addr:172.23.0.1 Bcast:0.0.0.0 Mask:255.255.0.0
Why does this interface forward packages for outside clients? I assume it is some kind of misconfiguration as it works sometimes.