docs: Add notes about limited MPLS-TE support

Add notes to several docs about the limits to FRR's current
MPLS-TE support, which is limited to some routing protocol
LSA/TLV support. It wasn't very clear that FRR does not offer
a complete TE/RSVP-TE solution at this time.

Also removed some stale info about configure script options.

Signed-off-by: Mark Stapp <mjs@voltanet.io>

1 files changed, 5 insertions, 9 deletions

diff --git a/doc/user/installation.rst b/doc/user/installation.rst
index b45c83ca1c..45549dccad 100644
--- a/doc/user/installation.rst
+++ b/doc/user/installation.rst
@@ -149,6 +149,11 @@ options from the list below.
    Turn off building of pimd.  On some BSD platforms pimd will not build properly due
    to lack of kernel support.
 
+.. option:: --disable-vrrpd
+
+   Turn off building of vrrpd. Linux is required for vrrpd support;
+   other platforms are not supported.
+
 .. option:: --disable-pbrd
 
    Turn off building of pbrd.  This daemon currently requires linux in order to function
@@ -194,11 +199,6 @@ options from the list below.
 
    Disable building of the example OSPF-API client.
 
-.. option:: --disable-ospf-ri
-
-   Disable support for OSPF Router Information (RFC4970 & RFC5088) this
-   requires support for Opaque LSAs and Traffic Engineering.
-
 .. option:: --disable-isisd
 
    Do not build isisd.
@@ -211,10 +211,6 @@ options from the list below.
 
    Enable IS-IS topology generator.
 
-.. option:: --enable-isis-te
-
-   Enable Traffic Engineering Extension for ISIS (RFC5305)
-
 .. option:: --enable-realms
 
    Enable the support of Linux Realms. Convert tag values from 1-255 into a