test-network: make kernel send NA with router flag

If the router interface send NA without router flag, client interface will drop
SLAAC addresses. To make the router interface send NA with router flag,
IPv6 forwarding needs to be enabled.
===
client: NDISC: Received Neighbor Advertisement from fe80::1034:56ff:fe78:9a99: Router=no, Solicited=yes, Override=no
client: NDISC: Invoking callback for 'neighbor' event.
client: Removing NDisc route (configured): dst: 2002:da8:1:99::/64, src: n/a, gw: n/a, prefsrc: n/a, table: main(254), priority: 1024, proto: ra, scope: global, type: unicast, flags: n/a
client: Removing NDisc route (configured): dst: n/a, src: n/a, gw: fe80::1034:56ff:fe78:9a99, prefsrc: n/a, table: main(254), priority: 1024, proto: ra, scope: global, type: unicast, flags: n/a
client: Removing NDisc address (configured): 2002:da8:1:99:1034:56ff:fe78:9a00/64 (valid for 23h 59min 58s, preferred for 3h 59min 58s), flags: manage-temporary-address,no-prefixroute, scope: global
===

diff --git a/test/test-network/conf/25-veth-router-captive.network b/test/test-network/conf/25-veth-router-captive.network
index 21259a3e1d814df96e2d51b154e4f3be5544f797..7d8afc8d59ddead6677ea83c8f67e1a5cb1996e2 100644 (file)
--- a/test/test-network/conf/25-veth-router-captive.network
+++ b/test/test-network/conf/25-veth-router-captive.network
@@ -5,3 +5,4 @@ Name=router-captive
 [Network]
 IPv6AcceptRA=no
 IPv6SendRA=no
+IPv6Forwarding=yes