38ddcfa756
- Allow to swap `github.com/vishvananda/netlink` - Allow to add build tags for each platform - One step closer to development on non-Linux platforms
42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
package netlink
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import (
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"fmt"
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"github.com/vishvananda/netlink"
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)
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func (n *NetLink) IsIPv6Supported() (supported bool, err error) {
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links, err := n.LinkList()
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if err != nil {
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return false, fmt.Errorf("listing links: %w", err)
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}
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var totalRoutes uint
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for _, link := range links {
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link := link
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routes, err := n.RouteList(&link, netlink.FAMILY_V6)
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if err != nil {
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return false, fmt.Errorf("listing IPv6 routes for link %s: %w",
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link.Name, err)
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}
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// Check each route for IPv6 due to Podman bug listing IPv4 routes
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// as IPv6 routes at container start, see:
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// https://github.com/qdm12/gluetun/issues/1241#issuecomment-1333405949
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for _, route := range routes {
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sourceIsIPv6 := route.Src.IsValid() && route.Src.Is6()
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destinationIsIPv6 := route.Dst.IsValid() && route.Dst.Addr().Is6()
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if sourceIsIPv6 || destinationIsIPv6 {
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n.debugLogger.Debugf("IPv6 is supported by link %s", link.Name)
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return true, nil
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}
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totalRoutes++
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}
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}
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n.debugLogger.Debugf("IPv6 is not supported after searching %d links and %d routes",
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len(links), totalRoutes)
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return false, nil
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}
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