diff --git a/examples/rendezvous_server/rendezvous_server.nim b/examples/rendezvous_server/rendezvous_server.nim
index b363895..d7496af 100644
--- a/examples/rendezvous_server/rendezvous_server.nim
+++ b/examples/rendezvous_server/rendezvous_server.nim
@@ -46,6 +46,7 @@ proc isInNetwork(ip: IpAddress, iface: NetworkInterface): bool =
   (ipScalar and netmaskScalar) == (ifaceIpScalar and netmaskScalar)
 
 proc probePublicIp(): Future[IpAddress] {.async.} =
+  # FIXME: need more reliable solution
   let output = await asyncExecCmd("ping -R -c 1 -s 1 -n 193.0.14.129")
   let ipLines = output.splitLines()
     .filter(proc(l: string): bool = l.startsWith("\t") or l.startsWith("RR:"))