Hi, 

I'm having trouble with backend-routing based on host header when H2 is 
enabled. 
Frontend is https only and all backends are HTTP1. 
We're using v2.4.4. 

When the user browser is directed to app2.example.com, it switches to 
app1.example.com. 
There is one public IP address, certificate is wildcard for the domain, so app1 
and app2 share the same IP and certificate. 
When H2 is disabled, all is working fine. 

Currently, backend selection is made with 
use_backend %[req.hdr(host),lower] 

Would 
use_backend %[ssl_fc_sni,lower] # Layer 5 
or 
use_backend %[req.ssl_sni,lower] # Layer 6 
help with H2 ? 

Thanks, 
Ionel 

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