- the display name is ignored;

- tags must match;

- user, password, host, port and parameters of the URI must match. If a component is omitted, it matches based on its default value.

- string comparisons are case-sensitive except for the domain part;

- Characters other than those in the "reserved" and "unsafe" sets (see RFC 2396) are equivalent to their ""%" HEX HEX" encoding.

- An IP address that is the result of a DNS lookup on a hostname does not match that hostname.