When I am assigning IP addresses to the interfaces mgmt, net_a & net_b of an EPC(Evolved Packet Core) modules like sgw or pgw. It assigns IPV6 address i.e. inet6 addr only to one of the net_a interface & not to other interfaces. In the screen shot here its clearly visible that inet6 or IPV6 address is only assigned to the net_a interface and not to net_b or mgmt interface.
Here in the screenshot its visible that when I run the script of one of the modules of EPC it cannot bind IPV6 socket & is unable to assign the requested address due to which after 30 attempts of IP binding it throws Segmentation fault error. Is this because some of the interfaces are not assigned IPV6 addresses?