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net/tstun: only log natConfig on changes

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Updates tailscale/corp#8020

Signed-off-by: Maisem Ali <maisem@tailscale.com>
This commit is contained in:
Maisem Ali 2023-03-24 13:13:57 -07:00 committed by Maisem Ali
parent 8ac5976897
commit d2fd101eb4
1 changed files with 5 additions and 2 deletions
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7
net/tstun/wrap.go
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@ -11,6 +11,7 @@ import (
"io" "io"
"net/netip" "net/netip"
"os" "os"
"reflect"
"strings" "strings"
"sync" "sync"
"sync/atomic" "sync/atomic"
@ -594,8 +595,10 @@ func natConfigFromNetMap(nm *netmap.NetworkMap) *natV4Config {
// It currently (2023-03-01) only updates the IPv4 NAT configuration. // It currently (2023-03-01) only updates the IPv4 NAT configuration.
func (t *Wrapper) SetNetMap(nm *netmap.NetworkMap) { func (t *Wrapper) SetNetMap(nm *netmap.NetworkMap) {
cfg := natConfigFromNetMap(nm) cfg := natConfigFromNetMap(nm)
t.natV4Config.Store(cfg) old := t.natV4Config.Swap(cfg)
t.logf("nat config: %+v", cfg) if !reflect.DeepEqual(old, cfg) {
t.logf("nat config: %+v", cfg)
}
} }
var ( var (