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[client] Probe the IPv6 nexthop through raw netlink

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addRoute swallows EAFNOSUPPORT and EOPNOTSUPP via isOpErr, so a nil return
did not prove the probe route was installed. Call netlink directly so an
unsupported operation skips the test instead of passing as usable.
This commit is contained in:
Zoltán Papp
2026-08-14 23:51:03 +02:00
parent 7bab15fa42
commit 3ef8acd8c3
1 changed files with 11 additions and 4 deletions
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15
client/internal/routemanager/systemops/v6route_linux_test.go
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@@ -55,11 +55,18 @@ func requireUsableIPv6Nexthop(t *testing.T) {
t.Skipf("resolve IPv6 default nexthop: %v", err)
}
probe := netip.MustParsePrefix("100::64/128")
switch err := addRoute(probe, nexthop, syscall.RT_TABLE_MAIN); {
probe := &netlink.Route{
Scope: netlink.SCOPE_UNIVERSE,
Table: syscall.RT_TABLE_MAIN,
Family: netlink.FAMILY_V6,
Dst: &net.IPNet{IP: net.ParseIP("100::64"), Mask: net.CIDRMask(128, 128)},
}
require.NoError(t, addNextHop(nexthop, probe), "build IPv6 probe route")
switch err := netlink.RouteAdd(probe); {
case err == nil:
if err := removeRoute(probe, nexthop, syscall.RT_TABLE_MAIN); err != nil {
t.Logf("remove IPv6 probe route: %v", err)
if err := netlink.RouteDel(probe); err != nil && !errors.Is(err, syscall.ESRCH) {
t.Logf("delete IPv6 probe route: %v", err)
}
case errors.Is(err, syscall.EEXIST):
default: