When changing trunk allowed vlan list and native vlan with powershell on Hyper-V server, the vm stopps originating pings. It cannot ping itself and network devices, it shows "timeout", but it answers ping originated from other network devices, it means that if some network device pings this router it receives the answer.
Other traffic still work fine, like routing, "tool traceroute", etc.
For what I can see now, only "ping" stopps working.
It happens at least on CHR 7.4rc1 and 7.3rc2.