rdkafka-dotnet should work with kafka 0.10.1.1 (it might not necessarily use the latest broker feature, but brokers can deal with previous client implementation - I'm using brokers on 0.10.1.0 without problem)
You can set api.version.request=true if you use the prerelease build (which point to librdkafka 0.9.2 which introduced this feature)
rdkafka-dotnet should work with kafka 0.10.1.1 (it might not necessarily use the latest broker feature, but brokers can deal with previous client implementation - I'm using brokers on 0.10.1.0 without problem)
You can set api.version.request=true if you use the prerelease build (which point to librdkafka 0.9.2 which introduced this feature)