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chore(netlink): log ipv6 support at debug level

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This commit is contained in:
Quentin McGaw
2022-12-14 11:21:29 +00:00
parent 2e3eb1fd7b
commit 16acd1b162
2 changed files with 5 additions and 6 deletions
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6
cmd/gluetun/main.go
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@@ -301,12 +301,6 @@ func _main(ctx context.Context, buildInfo models.BuildInformation,
return fmt.Errorf("checking for IPv6 support: %w", err) return fmt.Errorf("checking for IPv6 support: %w", err)
} }
if ipv6Supported {
logger.Info("IPv6 is supported")
} else {
logger.Info("IPv6 is not supported")
}
if err := routingConf.Setup(); err != nil { if err := routingConf.Setup(); err != nil {
if strings.Contains(err.Error(), "operation not permitted") { if strings.Contains(err.Error(), "operation not permitted") {
logger.Warn("💡 Tip: Are you passing NET_ADMIN capability to gluetun?") logger.Warn("💡 Tip: Are you passing NET_ADMIN capability to gluetun?")

5
internal/netlink/ipv6.go
View File

@@ -12,6 +12,7 @@ func (n *NetLink) IsIPv6Supported() (supported bool, err error) {
return false, fmt.Errorf("listing links: %w", err) return false, fmt.Errorf("listing links: %w", err)
} }
var totalRoutes uint
for _, link := range links { for _, link := range links {
routes, err := n.RouteList(link, netlink.FAMILY_V6) routes, err := n.RouteList(link, netlink.FAMILY_V6)
if err != nil { if err != nil {
@@ -26,10 +27,14 @@ func (n *NetLink) IsIPv6Supported() (supported bool, err error) {
sourceIsIPv6 := route.Src != nil && route.Src.To4() == nil sourceIsIPv6 := route.Src != nil && route.Src.To4() == nil
destinationIsIPv6 := route.Dst != nil && route.Dst.IP.To4() == nil destinationIsIPv6 := route.Dst != nil && route.Dst.IP.To4() == nil
if sourceIsIPv6 || destinationIsIPv6 { if sourceIsIPv6 || destinationIsIPv6 {
n.debugLogger.Debugf("IPv6 is supported by link %s", link.Attrs().Name)
return true, nil return true, nil
} }
totalRoutes++
} }
} }
n.debugLogger.Debugf("IPv6 is not supported after searching %d links and %d routes",
len(links), totalRoutes)
return false, nil return false, nil
} }