Some 170 people were killed when terrorists laid siege to various places in Mumbai Nov 26-29. India blamed Pakistan for the attack.
According to Advani, the inclusion of Balochistan in the joint statement amounted to acceding to Pakistan's allegations of India's hand in the troubled region.
The protest came a day ahead of Prime Minister Manmohan Singh's statement on the India-Pakistan issue in parliament.
The joint statement states: 'Prime Minister Gilani mentioned that Pakistan has some information on threats in Balochistan and other areas.
'Both Prime Ministers recognised that dialogue is the only way forward. Action on terrorism should not be linked to the composite dialogue process and these should not be bracketed. Prime Minister Singh said that India was ready to discuss all issues with Pakistan, including all outstanding issues.'