Table schema:
CREATE TABLE table_name_90 (location__numbersites__global_local_ VARCHAR, software VARCHAR, ipv6_address VARCHAR)

Question: What is the location for the software of BIND and an IPv6 address of 2001:503:c27::2:30?
SQL: SELECT location__numbersites__global_local_ FROM table_name_90 WHERE software = "bind" AND ipv6_address = "2001:503:c27::2:30"