tree 5f1032936f4413f7dc12935eabbdf62f940ffd12
parent 949b719eac0c8b51c73f144eb035fab27a16c2a6
author Donald Sharp <sharpd@cumulusnetworks.com> 1446661600 -0500
committer Donald Sharp <sharpd@cumulusnetworks.com> 1449601930 -0500

zebra: Fix change of distance on ipv6 route creating duplicate routes

If you enter:

ipv6 route 2002:44:44:44::44/128 swp1 4
ipv6 route 2002:44:44:44::44/128 swp1 99

You get:

host-111# show ipv6 route
Codes: K - kernel route, C - connected, S - static, R - RIPng,
O - OSPFv6, I - IS-IS, B - BGP, A - Babel, T - Table,
> - selected route, * - FIB route
S 2002:44:44:44::44/128 [99/0] is directly connected, swp1
S>* 2002:44:44:44::44/128 [4/0] is directly connected, swp1

This problem is fixed in the ipv4 code path.  Copying the same
code from the ipv4 into the ipv6 code path fixes the issue.

With the fix:

host-111(config)# ipv6 route 2002:44:44:44::44/128 swp1 4
host-111(config)# do show ipv6 route
Codes: K - kernel route, C - connected, S - static, R - RIPng,
       O - OSPFv6, I - IS-IS, B - BGP, A - Babel, T - Table,
       > - selected route, * - FIB route

S>* 2002:44:44:44::44/128 [4/0] is directly connected, swp1
C * fe80::/64 is directly connected, swp1
C>* fe80::/64 is directly connected, eth0
host-111(config)# ipv6 route 2002:44:44:44::44/128 swp1 99
host-111(config)# do show ipv6 route
Codes: K - kernel route, C - connected, S - static, R - RIPng,
       O - OSPFv6, I - IS-IS, B - BGP, A - Babel, T - Table,
       > - selected route, * - FIB route

S>* 2002:44:44:44::44/128 [99/0] is directly connected, swp1
C * fe80::/64 is directly connected, swp1
C>* fe80::/64 is directly connected, eth0
host-111(config)#

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>