impossible to launch switchspoofing attack with yersinia 0.8.2

[MartinCaeymaex]

Hello,

I try to perform a switch spoofing attack with yersinia 0.8.2 on Cisco catalyst 2960 switches with IOS version 15 on a little home network but it doesn't work as it should be. The forced dtp trunk between the Yersinia - Kali client and the switch is formed. When putting yersinia in 802.1q mode I don't see broadcasts coming in. The kali host (2020.3) in Virtual box (bridged mode and in promiscuous mode with all addresses permitted) in windows 10 with firewall deactivated works fine with the non trunked connection (ping to other hosts ok), once the trunk setup and virtual interfaces created ping to other hosts doesn't work anymore. Is it a bug in Yersinia or is it due to the Cisco switch IOS?