Fix UDPv6 assert (#1592)
Fix UDPv6 assert (#1592)

Signed-off-by: jparisu <77c16a842ce5fd8b7710b6ef1671f5241f8da36e@eprosima.com>
eProsima/Fast-DDS,eProsima/Fast-DDS,eProsima/Fast-RTPS,eProsima/Fast-RTPS,eProsima/Fast-DDS,eProsima/Fast-RTPS,eProsima/Fast-DDS,eProsima/Fast-RTPS,eProsima/Fast-RTPS,eProsima/Fast-DDS