Supernet issues in nginx geo !!

shahzaib mushtaq shahzaib.cb at gmail.com
Thu Dec 15 12:11:52 UTC 2016


Hi,

We're using nginx geo module to redirect requests from specific
subnets/supernets. If request is coming from following ips, it should be
redirected towards caching node :

geo $qwilt_user {
  default 0;
  182.184.25.66/32 1;
  103.28.152.0/22 1;
  203.135.0.0/18 1;
  203.99.0.0/16 1;
  116.71.0.0/16 1;
  59.103.0.0/16 1;
  119.152.0.0/13 1;
  *39.32.0.0/11 <http://39.32.0.0/11> 1;*

The critical problem here now is that if request is coming from ip
39.45.111.1 its not redirecting but you  can clearly see from subnet bit
above which is /11 , means subnets from 39.32.X.X all the way to 39.63.X.X
are summed up within subnet 39.32.0.0/11 & supposed to be redirect.

Is this limitation of the geo module that it is not supporting supernetting
?

Thanks in advance !!

Shahzaib
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