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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 <phil@nwl.cc>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Phil Sutter 2018-11-13 16:55:13 +01:00 committed by Stephen Hemminger
parent 6d1af9abc5
commit 6cd959bb12
1 changed files with 9 additions and 0 deletions
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9
man/man8/ip-route.8.in
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@ -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.