Strange decoding?

[Vincent CATROS <vincent.catros () laposte net>]

Hello,

I have a faulty equipement sending IPv6 packets with ethertype 0x0800 (IPv4).
Nevertheless Wireshark decodes it as IPv6. (check packet #6 of the joined file).

It seems strange to me, I thought Wireshark uses ethertype for decoding, or least selecting the disector, but it does 
not seems to be the case. And even if Wireshark uses an other method I would have like it to warn me.

Could someone explain to me why this behaviour?

Regards.
Vincent

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