Netflix and IPv6

It seems that Netflix has an ongoing issue of not working well with IPv6, apparently they have some sort of region checking code that doesn’t correctly identify IPv6 prefixes. To fix this I wrote the following script to make a small zone file with only A records for Netflix and no AAAA records. The $OUT.header file just has the SOA record for my fake netflix.com domain.

#!/bin/bash

OUT=/etc/bind/data/netflix.com
HEAD=$OUT.header

cp $HEAD $OUT
dig -t a www.netflix.com @8.8.8.8|sed -n -e "s/^.*IN/www IN/p"|grep [0-9]$ >> $OUT
dig -t a android.prod.cloud.netflix.com @8.8.8.8|sed -n -e "s/^.*IN/android.prod.cloud IN/p"|grep [0-9]$ >> $OUT
/usr/sbin/rndc reload > /dev/null

Update

I updated this post to add a line for android.prod.cloud.netflix.com which is the address used by Android devices.