From 27bd0ae2abcbd1aea6c60e9a68b39c411614952b Mon Sep 17 00:00:00 2001 From: x70b1 Date: Thu, 1 Jun 2023 23:09:36 +0200 Subject: MSS-Clamp: 1432 on IPv6 via PPPoE --- docs/configuration/interfaces/pppoe.rst | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'docs/configuration') diff --git a/docs/configuration/interfaces/pppoe.rst b/docs/configuration/interfaces/pppoe.rst index 74a43bb5..6e922cfb 100644 --- a/docs/configuration/interfaces/pppoe.rst +++ b/docs/configuration/interfaces/pppoe.rst @@ -245,8 +245,8 @@ IPv6 .. note:: This command was introduced in VyOS 1.4 - it was previously called: ``set firewall options interface adjust-mss `` - .. hint:: MSS value = MTU - 20 (IP header) - 20 (TCP header), resulting in - 1452 bytes on a 1492 byte MTU. + .. hint:: MSS value = MTU - 40 (IPv6 header) - 20 (TCP header), resulting in + 1432 bytes on a 1492 byte MTU. Instead of a numerical MSS value `clamp-mss-to-pmtu` can be used to automatically set the proper value. -- cgit v1.2.3