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NAT support for Flexnet Publisher Licensing.

For this particular usecase, the "FNP_IP_ENV" environment variable introduced in v11.12.1.1 (FNP) should serve the purpose.

Setting environment variable FNP_IP_ENV=1 (Set on client) allows NAT translation and the client-side hostname resolution is bypassed. Instead, the client's IP address is determined from the socket connection at the server, which means that a NAT-translated IP address for the client can be obtained.

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NAT support for Flexnet Publisher Licensing.