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+Long: dns-interface
+Arg: <interface>
+Help: Interface to use for DNS requests
+Protocols: DNS
+See-also: dns-ipv4-addr dns-ipv6-addr
+Added: 7.33.0
+Requires: c-ares
+---
+Tell curl to send outgoing DNS requests through <interface>. This option is a
+counterpart to --interface (which does not affect DNS). The supplied string
+must be an interface name (not an address).