Reg: backend 'name' in VCL before going to origin

Hardik hetardik.p at
Wed May 29 11:54:57 UTC 2019

Hi Team,

Requirement : *to set few headers based on backend origin ( having multiple
origins/backends in single director)*.

I want to do similar to this.

sub vcl_backend_fetch {
    if ( == "one") {
    } else if ( == "two") {
    } else {
       std.log("neither one");

I am trying to do same (inside b_fetch) but getting error that symbol not
found. I am using varnish 6.1.
Is this different function call/name for varnish 6.1 ?

Thank you
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