cHave you blocked anyone...could be an instancing issue with a cmdr you've blocked. Or a friend of yours has blocked who your winged up with.
Happened thrice...? Same ganker?
My blocklist is empty.
The first two times I asked for 1v1 and someone (who might have been in a wing of 4) kindly interdicted me. After the 1st crash I loaded Odyssey again, we tried again with same result. They hunt gankers I think, we were SC instance for quite some time - I am not a ganker but if one of his wingmates thought I was a ganker, they had plenty of time to clear their blocklist and wing up on me. They did not.
The third time I was interdicted by a corvette who was in a wing with a conda. We circled each other twice then my exe crashed.
True I do not have port forwarding enabled (at this house no one has admin rights to the router and we cannot switch router either) but it has not been an issue for the past week - I've had multiple pvp encounters.
Do you think it's possible the folks today happened to be from a 'distant' different geolocation from me ?