[Varnish] #1650: X-Forwarded-For looses the first ip in list

[Varnish]

#1650: X-Forwarded-For looses the first ip in list
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 Reporter:  KlavsKlavsen  |       Owner:
     Type:  defect        |      Status:  closed
 Priority:  normal        |   Milestone:
Component:  build         |     Version:  4.0.2
 Severity:  normal        |  Resolution:  worksforme
 Keywords:                |
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Comment (by KlavsKlavsen):

 while I do realize it's fairly sensible to do so - there's no actual
 standard saying that there cannot be multiple x-forwarded-for headers (and
 the Forwarded header (RFC7239) actually is going to use multiple lines) -
 it would be fair for someone to want to accept x-forwarded-headers like
 that.

 So perhaps an option in varnish 4 - to make it work as is possible with
 varnish 3 - without modifying x-forwarded-for headers.. so one can simply
 handle it how one wants.

 I will try to get the defective cisco box fixed, but I would appreciate
 being able to choose how Varnish handles x-forwarded-for - if at all.. it
 should be an optional header (in varnish 4 I can only choose to unset it -
 not to leave it as-is).

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1650#comment:7>
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