from italy
i am a networking teacher in iti enrico fermi modena, an high school (students from 16 to 19)
at school we have about 60 mikrotik hap ac lite and with our students test successfully vlans from 2018.
during lockdown we work with students at home with chr and virtualbox using internal networks to connect 2 chr with the same vlans confs as hap hw devices but only 2 test on about 60 were successful and the others do not run as espected (do not ping at all).
more and more attempts to understand why but now we only have this RUNNING conf on alice and bob chr devices on virtualbox:
this is the network scheme to the students tested in paste years on mikrotik hw running always smooth where are also declared virtualbox internal nets used this year with chr and two linux minimal client vms with this network conf:
h1: 1.1.1.1/24, h2: 1.1.1.2/24
on mikrotik hw: with active reciprocal ping if phisical hosts are in the same vlan they ping on different vlan do not ping: (change cable eth port.)
on virtualbox chr and h1, h2 : in 2 cases all goes well in the other about 60 do not ping each other also on the same vlan: (change virtualbox internal net)
in the two good cases of vms chr the conf exported as .rsc or .backup restored in other resetted chr do not run.
