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lastdragon
2026-09-06 12:53:21 -06:00
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linux-7.2.3/Documentation/networking/seg6-sysctl.rst
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.. SPDX-License-Identifier: GPL-2.0
====================
Seg6 Sysfs variables
====================
/proc/sys/net/conf/<iface>/seg6_* variables:
============================================
seg6_enabled - BOOL
Accept or drop SR-enabled IPv6 packets on this interface.
Relevant packets are those with SRH present and DA = local.
* 0 - disabled (default)
* not 0 - enabled
seg6_require_hmac - INTEGER
Define HMAC policy for ingress SR-enabled packets on this interface.
* -1 - Ignore HMAC field
* 0 - Accept SR packets without HMAC, validate SR packets with HMAC
* 1 - Drop SR packets without HMAC, validate SR packets with HMAC
Default is 0.
/proc/sys/net/ipv6/seg6_* variables:
====================================
seg6_flowlabel - INTEGER
Controls the behaviour of computing the flowlabel of outer
IPv6 header in case of SR T.encaps
== =======================================================
-1 set flowlabel to zero.
0 copy flowlabel from Inner packet in case of Inner IPv6
(Set flowlabel to 0 in case IPv4/L2)
1 Compute the flowlabel using seg6_make_flowlabel()
== =======================================================
Default is 0.