From b99d3fd8b5a7dd140a2b4c7a7e70aea7478634f7 Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Mon, 26 Nov 2018 19:11:55 +0100 Subject: [PATCH] man: ip-route.8: Document nexthop limit Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1625358 Upstream Status: iproute2.git commit 6cd959bb125c5 commit 6cd959bb125c50a04ab6671645fa38c5b07426f4 Author: Phil Sutter Date: Tue Nov 13 16:55:13 2018 +0100 man: ip-route.8: Document nexthop limit Add a note to 'nexthop' description stating the maximum number of nexthops per command and pointing at 'append' command as a workaround. Signed-off-by: Phil Sutter Signed-off-by: Stephen Hemminger --- man/man8/ip-route.8.in | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/man/man8/ip-route.8.in b/man/man8/ip-route.8.in index b21a847..e464353 100644 --- a/man/man8/ip-route.8.in +++ b/man/man8/ip-route.8.in @@ -589,6 +589,15 @@ argument lists: route reflecting its relative bandwidth or quality. .in -8 +The internal buffer used in iproute2 limits the maximum number of nexthops that +may be specified in one go. If only +.I ADDRESS +is given, the current buffer size allows for 144 IPv6 nexthops and 253 IPv4 +ones. For IPv4, this effectively limits the number of nexthops possible per +route. With IPv6, further nexthops may be appended to the same route via +.B "ip route append" +command. + .TP .BI scope " SCOPE_VAL" the scope of the destinations covered by the route prefix. -- 1.8.3.1