2013-11-15 00:14:18 +01:00
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# GRE on FreeBSD
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This page describes how to configure GRE tunnels on FreeBSD.
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## Requirements
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* Root access to a FreeBSD system.
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* Loaded if_gre.ko or device gre
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* A static IPv4 address on both ends if you would like to preserve your sanity.
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## Create a temporary gre tunnel
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2013-11-15 00:15:04 +01:00
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```bash
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2013-11-15 00:14:18 +01:00
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ifconfig gre$INDEX create
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ifconfig gre$INDEX tunnel $TUNNEL_SRC $TUNNEL_DST
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ifconfig gre$INDEX inet $LOCAL $REMOTE netmask 0xffffffff
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ifconfig gre$INDEX descr $DESCR
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```
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## Create a persistent gre tunnel
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Add this to your `rc.conf`.
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```
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cloned_interfaces="$cloned_interfaces gre0"
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ifconfig_gre0="10.0.0.1 10.0.0.2 netmask 0xffffffff tunnel 1.2.3.4 5.6.7.8 descr foo"
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```
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