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ipn/ipnlocal: add MagicDNS records for IPv6-only nodes

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Updates #2268

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2021-09-07 15:45:28 -07:00
committed by Brad Fitzpatrick
parent 90b0cd0c51
commit 7fe6ecf165
3 changed files with 31 additions and 4 deletions
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3
ipn/ipnlocal/local.go
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@@ -1798,6 +1798,7 @@ func dnsConfigForNetmap(nm *netmap.NetworkMap, prefs *ipn.Prefs, logf logger.Log
if err != nil {
return // TODO: propagate error?
}
have4 := tsaddr.PrefixesContainsFunc(addrs, func(p netaddr.IPPrefix) bool { return p.IP().Is4() })
var ips []netaddr.IP
for _, addr := range addrs {
// Remove IPv6 addresses for now, as we don't
@@ -1807,7 +1808,7 @@ func dnsConfigForNetmap(nm *netmap.NetworkMap, prefs *ipn.Prefs, logf logger.Log
// https://github.com/tailscale/tailscale/issues/1152
// tracks adding the right capability reporting to
// enable AAAA in MagicDNS.
if addr.IP().Is6() {
if addr.IP().Is6() && have4 {
continue
}
ips = append(ips, addr.IP())