.. 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.