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ipn/ipnlocal: initialize DNS config maps unconditionally.

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Fixes #1963.

Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson 2021-05-20 20:22:21 -07:00
parent eb9757a290
commit df350e2069
1 changed files with 4 additions and 5 deletions
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9
ipn/ipnlocal/local.go
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@ -1694,7 +1694,10 @@ func (b *LocalBackend) authReconfig() {
rcfg := b.routerConfig(cfg, uc) rcfg := b.routerConfig(cfg, uc)
var dcfg dns.Config dcfg := dns.Config{
Routes: map[dnsname.FQDN][]netaddr.IPPort{},
Hosts: map[dnsname.FQDN][]netaddr.IP{},
}
// Populate MagicDNS records. We do this unconditionally so that // Populate MagicDNS records. We do this unconditionally so that
// quad-100 can always respond to MagicDNS queries, even if the OS // quad-100 can always respond to MagicDNS queries, even if the OS
@ -1725,7 +1728,6 @@ func (b *LocalBackend) authReconfig() {
} }
dcfg.Hosts[fqdn] = ips dcfg.Hosts[fqdn] = ips
} }
dcfg.Hosts = map[dnsname.FQDN][]netaddr.IP{}
set(nm.Name, nm.Addresses) set(nm.Name, nm.Addresses)
for _, peer := range nm.Peers { for _, peer := range nm.Peers {
set(peer.Name, peer.Addresses) set(peer.Name, peer.Addresses)
@ -1744,9 +1746,6 @@ func (b *LocalBackend) authReconfig() {
} }
addDefault(nm.DNS.Resolvers) addDefault(nm.DNS.Resolvers)
if len(nm.DNS.Routes) > 0 {
dcfg.Routes = map[dnsname.FQDN][]netaddr.IPPort{}
}
for suffix, resolvers := range nm.DNS.Routes { for suffix, resolvers := range nm.DNS.Routes {
fqdn, err := dnsname.ToFQDN(suffix) fqdn, err := dnsname.ToFQDN(suffix)
if err != nil { if err != nil {