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-rw-r--r--doc/user/overview.rst2
1 files changed, 2 insertions, 0 deletions
diff --git a/doc/user/overview.rst b/doc/user/overview.rst
index 262c0117df..2c8eadd4a7 100644
--- a/doc/user/overview.rst
+++ b/doc/user/overview.rst
@@ -292,6 +292,8 @@ BGP
:t:`BGP/MPLS IP Virtual Private Networks (VPNs). Y. Rekhter. Feb 2006.`
- :rfc:`4659`
:t:`BGP-MPLS IP Virtual Private Network (VPN) Extension for IPv6 VPN. J. De Clercq, D. Ooms, M. Carugi, F. Le Faucheur. September 2006.`
+- :rfc:`4893`
+ :t:`BGP Support for Four-octet AS Number Space. Q. Vohra, E. Chen May 2007.`
- :rfc:`5004`
:t:`Avoid BGP Best Path Transitions from One External to Another. E. Chen & S. Sangli. September 2007 (Partial support).`
- :rfc:`5082`