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IP over LLC with a twist

Dear Wireshark Community

I stumbled over a trace file with an non-standard version of IP over LLC. Wireshark can decode regular IP over LLC, if the organization code is set to zero:

Logical-Link Control
    DSAP: SNAP (0xaa)
    SSAP: SNAP (0xaa)
    Control field: U, func=UI (0x03)
    Organization Code: 00:00:00 (Officially Xerox, but
    Type: IPv4 (0x0800)

Alas, in my trace file the organization code is specific to the manufacturer Hirschmann:

Logical-Link Control
    DSAP: SNAP (0xaa)
    SSAP: SNAP (0xaa)
    Control field: U, func=UI (0x03)
    Organization Code: 00:80:63 (Richard Hirschmann Gm
    Protocol ID: 0x0800

Does anybody have an idea, how to get Wireshark to to treat this as IP?

All hints are appreciated

Eddi