net: handle more interface types without a hardware address on Plan 9
We were handling loopback devices when attempting to read hardware
address, but packet interfaces were not being handled. As a general fix,
don't attempt to read hardware address of any device that's not inside
/net.
Fixes #39908
Change-Id: Ifa05e270357e111c60906110db2cc23dc7c1c49c
Reviewed-on: https://go-review.googlesource.com/c/go/+/240259
Run-TryBot: David du Colombier <0intro@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David du Colombier <0intro@gmail.com>
diff --git a/src/net/interface_plan9.go b/src/net/interface_plan9.go
index 1295017..31bbaca 100644
--- a/src/net/interface_plan9.go
+++ b/src/net/interface_plan9.go
@@ -68,8 +68,8 @@
}
ifc.MTU = mtu
- // Not a loopback device
- if device != "/dev/null" {
+ // Not a loopback device ("/dev/null") or packet interface (e.g. "pkt2")
+ if stringsHasPrefix(device, netdir+"/") {
deviceaddrf, err := open(device + "/addr")
if err != nil {
return nil, err
