Dutta, P., Balus, F., Stokes, O., Calvignac, G., and D. Fedyk, "LDP Extensions for Optimized MAC Address Withdrawal in a Hierarchical Virtual Private LAN Service (H-VPLS)", RFC 7361, DOI 10.17487/RFC7361, September 2014, <https://www.rfc-editor.org/info/rfc7361>.