Comment 29 for bug 1874831

Thanks for confirming my bad feeling here Robie :-/

I might not know enough of real nchan/nginx usage, if we can make it clear that the old version in focal really is useless for any real case then we can SRU the new version.

Otherwise we'd really need to find the individual fix to pick it onto what we have in Focal.

@Damjan - can you help to differ between the above two cases?