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Update GRE Wikipedia URL

Anonymous committed 2025-06-10 00:55:05 +0000 commit 1eb6b50543c8d193e4e5488192712693d03b157a

				howto/GRE-plus-IPsec.md
			
          @@ -1,7 +1,7 @@

           # GRE+IPsec

           ## Why GRE?

          -* [GRE](https://en.wikipedia.org/wiki/GRE) provides universal encapsulation on top of IP.

          +* [GRE](https://en.wikipedia.org/wiki/Generic_routing_encapsulation) provides universal encapsulation on top of IP.

           * It has a smaller header than UDP.

           * GRE tunnels are processed in-kernel on *nix systems.

           * It's supported by hardware routers.

...	...	@@ -1,7 +1,7 @@
1	1	# GRE+IPsec
2	2
3	3	## Why GRE?
4		-* [GRE](https://en.wikipedia.org/wiki/GRE) provides universal encapsulation on top of IP.
	4	+* [GRE](https://en.wikipedia.org/wiki/Generic_routing_encapsulation) provides universal encapsulation on top of IP.
5	5	* It has a smaller header than UDP.
6	6	* GRE tunnels are processed in-kernel on *nix systems.
7	7	* It's supported by hardware routers.