3 files changed, 15 insertions, 0 deletions
diff --git a/Library/Homebrew/dependency_collector.rb b/Library/Homebrew/dependency_collector.rb
index 1641c71e6..b7bd1376b 100644
--- a/Library/Homebrew/dependency_collector.rb
+++ b/Library/Homebrew/dependency_collector.rb
@@ -120,6 +120,7 @@ class DependencyCollector
     when :python3    then Python3Dependency.new(tags)
     when :java       then JavaDependency.new(tags)
     when :osxfuse    then OsxfuseDependency.new(tags)
+    when :tuntap     then TuntapDependency.new(tags)
     # Tiger's ld is too old to properly link some software
     when :ld64       then LD64Dependency.new if MacOS.version < :leopard
     when :ant        then ant_dep(spec, tags)
diff --git a/Library/Homebrew/requirements.rb b/Library/Homebrew/requirements.rb
index 7dcd5039f..d387d3871 100644
--- a/Library/Homebrew/requirements.rb
+++ b/Library/Homebrew/requirements.rb
@@ -6,6 +6,7 @@ require 'requirements/maximum_macos_requirement'
 require 'requirements/mpi_dependency'
 require 'requirements/osxfuse_dependency'
 require 'requirements/python_dependency'
+require 'requirements/tuntap_dependency'
 require 'requirements/unsigned_kext_requirement'
 require 'requirements/x11_dependency'
 
diff --git a/Library/Homebrew/requirements/tuntap_dependency.rb b/Library/Homebrew/requirements/tuntap_dependency.rb
new file mode 100644
index 000000000..cf306b5cd
--- /dev/null
+++ b/Library/Homebrew/requirements/tuntap_dependency.rb
@@ -0,0 +1,13 @@
+require "requirement"
+
+class TuntapDependency < Requirement
+  fatal true
+  default_formula "tuntap"
+  satisfy { self.class.binary_tuntap_installed? || Formula["tuntap"].installed? }
+
+  def self.binary_tuntap_installed?
+    File.exist?("/Library/Extensions/tun.kext") && File.exist?("/Library/Extensions/tap.kext")
+    File.exist?("/Library/LaunchDaemons/net.sf.tuntaposx.tun.plist")
+    File.exist?("/Library/LaunchDaemons/net.sf.tuntaposx.tap.plist")
+  end
+end