convert from ipv4 to ipv6

hello

i'm working on aix 5300-05-03 hacmp ver 5.4
well my issue is that when firewall (gateway to internet ) goes down my machine start to work very very slowly!!!
the output of the sniffer is that on the output card , my machine try to convert ipv4 to ipv6 0.0.2.0
my machine is not configure to work with ipv6 and the network dosnt know to work with ipv6.

what i need to do when the connection to the internet goes done
not effact me??

best regards

ariec

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