squid-3.0 series has nothing to do with IPv6. both disable and enable are missing and irrelevant.
squid-3.0 series support is TPROXYv2 only and is not able to be used or even built against the Lucid kernel which supports a minimum of TPROXYv4.
The newer 3.1 series Squid is required for both IPv6 and TPROXYv4 support.
squid-3.0 series has nothing to do with IPv6. both disable and enable are missing and irrelevant.
squid-3.0 series support is TPROXYv2 only and is not able to be used or even built against the Lucid kernel which supports a minimum of TPROXYv4.
The newer 3.1 series Squid is required for both IPv6 and TPROXYv4 support.