grafana-image-renderer: Does not work when IPv6 is disabled

Is this plugin trying to bind to "[::]" ?

Because we disable IPv6 in the kernel to avoid a certain class of problems, and the plugin refuses to start with this message: E1023 17:01:02.999153762 20891 server_chttp2.cc:38] {"created":"@1571842862.999100646","description":"No address added out of total 1 resolved","file":"../deps/grpc/src/core/ext/transport/chttp2/server/chttp2_server.cc","file_line":305,"referenced_errors":[{"created":"@1571842862.999093903","description":"Failed to add port to server","file":"../deps/grpc/src/core/lib/iomgr/tcp_server_uv.cc","file_line":436,"referenced_errors":[{"created":"@1571842862.999087065","description":"Failed to initialize UV tcp handle","file":"../deps/grpc/src/core/lib/iomgr/tcp_server_uv.cc","file_line":277,"os_error":"address family not supported"}]}]}